X-Dimension systems

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This is an exhaustive list of X-Dimension's various subsystems.



Bottom in 2009

Specifications provided by David Collins:

Length Over All (LOA):  43.4 ft
Waterline Length:       35.9 ft
Maximum Beam:           13.0 ft
Draft:                  7.75 ft (7 ft 9 in) 
                        (Note: original draft was 7.50 ft 
                         but keel was modified by original owner)
Displacement:           22,000 lbs
PHRF/NE Rating:         72 base; 
                        as sailed 2011: 87 racing, 90 cruising
Powerplant:             Perkins 4-108 50hp (new in 1989)
Mast and rig:           Sparcraft tapered 2-spreader /
                            discontinuous rod (new in 2007)
Fuel Capacity:          40 gal
Water Capacity:         80 gal
Boat Plan (Arieto: 1970 custom C&C 43' hull #1)

C&C Custom 43 specifications, but actual dimensions may differ. For example, mast was replaced in 2007 and keel was modified by previous owner, Blair Vedder. The values below should not be used without independent verification.

   Hull Type: Fin Keel           
    Rig Type: Masthead Sloop
         LOA: 43.33' / 13.21m    
         LWL: 35.00' / 10.67m
        Beam: 12.83' / 3.91m      
   Listed SA: 901 ft2 / 83.7 m2
       Draft: 7.00' / 2.34 m	 
Displacement: 21314 lbs./ 9668 kgs.  
     Ballast: 9980 lbs. / 4527 kgs.
    Designer: Cuthbertson & Cassian
     Builder: C&C Yachts (CAN)
  Construct.: FG 	 
 First Built: 1971
  Last Built:
     # Built:
  I: 56.00' / 17.07m    J: 18.80' / 5.73m
  P: 50.00' / 15.24m    E: 15.00' / 4.57m
 PY:                   EY: 	 
SPL:                  ISP: 	 
SA(Fore): 526.40 ft2 / 48.90 m2
SA(Main): 375.00 ft2 / 34.84 m2
Total SA: 901.40 ft2 / 83.74 m2
 SA/Disp: 18.83
Est. Forestay Len.: 59.07' / 18.00m


  • 230 feet of white 3-stranded rode in blue basket, single black mark every 10 feet, double or triple mark every 50 feet
  • 90 feet of blue/orange polypropylene 3-stranded rode
  • 100 feet of beige 3-stranded rode
  • big Danforth anchor with 10 feet of chain attached
  • smaller CQR anchor


Mast and Boom

  • Total length of mast: 63' 11.5"
  • Height of mast above deck: 57' 0.5"
  • Height of lower spreader above deck: 22' 0.5"
  • Height of upper spreader above deck: 41' 2.75"
  • Height of foredeck light above deck: 25'
  • Distance from base of mast to deck: 6' 11"
  • Distance from base of mast to foredeck light: 31' 11"

Standing Rigging

Shrouds and Spreaders

Standing rigging on the mast was inspected in detail March 2016. All rod rig fittings were removed, mushroom ends cleaned and regreased and reassembled except for the port lower spreader cup - there's one sticky set screw that cannot be loosened. Red threadlocker was used where appropriate. As a result of the inspection the upper starboard shroud (from the lower spreader to the masthead) was removed and taken to the riggers, where the lower end was cut off, the ferrule replaced, and a new head formed. The rigger said this was a non-standard size; he thinks it is not a Navtec rod but another make. He says a size 15 die (not a usual Navtec size) is the best match.

During the inspection everything seemed fine except the ferrules for the upper ends of the upper diagonals (lower spreaders to upper spreaders) could not be freed from the rod; the heads looked fine. Again, the port lower spreader cup could not be disassembled.

The rigger that we used: Kevin at NorthEast Rigging, 978-287-0060, http://nerigging.com/.

Headstay and Backstay

A Harken Mark III (Unit Size 2) headstay roller furling system is installed on the headstay. The drum should roll clockwise when rolling in the headsail. Owner's manual can be found at [1]

The backstay has a Sailtec Integral Backstay Adjuster (Model 10SI), brochure on web (no operating instructions). When sailing upwind, the backstay should be adjusted so that the piston is approximately 2 inches from the white gauge on the shaft (2" minimum). Cross check the headstay sag. In moderate winds, the headstay should have very little sag.

Running Rigging


  • Main halyard: 125' long x 1/2 " (core unknown). As of Feb 2016 we have two in good condition.
  • Jib halyard: 125' long x 7/16" dia. with hi-tech core with no creep. As of March 2016 we have two in good condition, one new (solid green color) as of March 2016.
  • Spinnaker halyard: One 125' long x 7/16" dia. with hi-tech core (creep OK), one 125' long x 7/16" dia. of Sta-Set new as of March 2016.
  • Spinnaker pole topping lift: 95' long x 3/8" dia of Sta-Set. No need for a high-tech core here. New as of March 2016.

The covering of many of the jib/spin halyards is worn about 20' from the snap shackle, which would be about the level of the upper spreaders when the halyards are attached to a sail and tensioned. Inspection in March 2016 indicated that the screws holding the birdlines above the upper spreaders are the likely cause - these were too long and protruded inside the mast. They were set to a length that was flush with the inside of the mast and locked with nuts on the outside of the mast prior to launch in April 2016.


  • 2016 season main sheet: Main sheet 52' x 9/16" measured
  • 2016 season jib sheet: 58' x 3/4 " measured (remeasured: 58 1/2 feet long)

The 2016 season jib sheet diameter was clearly too big - it was hard to fit through blocks, and was a little big for the winches. It was easy on the hands, though.


The traveler is built of Harken "big boat" and HL (high load). The purchase is 4:1.

  • track: 5 foot long Harken 32mm
  • end controls: Harken 5170 with cam cleat
  • car: Harken T3242B.HL

Boom Vang

  • The boom vang was repaired in 2013. The spring and the vang tube were replaced.
  • If necessary to adjust the vang to level the boom, first attach a topping lift to the boom (the main halyard will serve this purpose well). When the weight of the boom is held by the topping lift, remove the two 10-32 allen head cap screws that are located on either side of the vang tube near where the red indicator tab is in the vang tube slot. These allen head cap screws fit into a series of threaded holes in the inner aluminum thick walled tube that carries the red indicator tab. This tube serves as the stop for the main vang spring. Raise or lower the boom until the proper threaded holes line up with the clearance holes in the outer tube and re-install the cap screws.


Sails Kept on the Boat

General: The [Owners "Helpful Hints"] has various advice in the pages 4-5 "Sail Control" section.


When not sailing, the mainsail is normally kept flaked on the boom with a sail cover.

While hoisting, reefing, or flaking the mainsail, the "lazy jacks" (E-Z-JAX system) can help contain it. See the E-Z-Jax system manual (untitled pdf) for operation instructions (page 4).


The #3 Genoa (approximately 135%) is an older sail. Can be sheeted inside or outside the shrouds.

The #1 Genoa was purchased for the 2014 season.

There is a UV shield on the #1 and #3 genoas. Port side. Make sure it is exposed when the sail is left furled on the drum. The drum should roll clockwise when rolling in the sail.

The #4 jib/ heavy-weather jib was purchased for the 2016 season. There is no UV shield on this sail; please do not store it on the headstay.


New for the 2016 sailing season is an asymmetric 'runner'.

Sail Inventory (as of May 2016)


The mainsail was purchased new prior to the 2014 season, and is on the boat during the sailing season and in the end bay of the pavilion off-season.

Storm Trysail

Jibs and Genoas

Genoa #1 was purchased new prior to the 2014 season, and is on the boat during the sailing season and in the end bay of the pavilion off-season. There is a UV shield on the Genoa, port side. Make sure it is exposed when the sail is left furled on the drum. The drum should roll clockwise when rolling in the sail.

Genoa #3 (tied with sail ties, but not in a sail bag)

There is a UV shield on the #1 and #3 genoas. Port side. Make sure it is exposed when the sail is left furled on the drum. The drum should roll clockwise when rolling in the sail.

A #4 jib/ Heavy-weather jib (satisfies ISAF HW jib definition): purchased new in Spring 2016. There is no UV shield on this sail; do not roller furl this jib - take it off the headstay.

Storm jib, new in 2013.

Asymmetric Spinnaker

We have a ~new asymmetric spinnaker as of Spring 2016. Shredded in June 2016. To be diagnosed, possibly repaired off season.

Symmetric Spinnakers

As of May 2015 we do not have the capability to fly symmetric spinnakers on the boat.

0.5 oz Tri Radial Symmetric Spinnaker (in North Sails blue bag dated 1979)

0.75 oz Symmetric Spinnaker (in North Sails blue bag)

1.5 oz Tri Radial Symmetric Spinnaker (in blue sail bag)

Three symmetric spinnakers (one of each weight) were relocated to S. Dynes' garage for hanging storage Oct 2013.

Sails We Used To Own

The original working main that came with the boat blew out at the end of the 2013 season. North Sails deemed it unrepairable.

A spare main, originally for the previous mast and unable to be mounted on the current mast without changing slugs. Discarded as part of a pavilion cleanup fall 2013.

Original Genoa #2. A panel split during the 2013 season; North Sails deemed it unrepairable.

Original Genoa #1. Various tears/holes during the 2013 season; North Sails deemed it unrepairable ("nothing to sew to'). Discarded as part of a pavilion cleanup fall 2013.

Working Asymmetric Spinnaker : blew out a panel at the end of the 2014 season, North Sails deemed it unrepairable.



X Dimension Winches

When delivered to MIT in August 2011, X-Dimension sported 16 winches. After winter refurbishment January 2012, X-Dimension has 14 winches.

fore mast port (#1) - Barient 22 (torn down and cleaned july16)
fore mast stbd (#2) - Barient 20
mast port (#3) - Barient 28 (torn down and cleaned may13)
boom (#4) - Barient 10H
aft mast port (#5) - Barient 22 (made functional 19sep12; needs to be torn down and cleaned)
aft mast stbd (#6) - Barient 22 (torn down and cleaned apr13)
companionway port (#7) - Barient 22
companionway stbd (#8) - Meissner 27
traveler port (#9) - Barient 10P
traveler stbd (#10) - Barient 10
fore cockpit port (#11) - Barient 32 (torn down and cleaned jun12)
fore cockpit stbd (#12) - Barient 32 (partially torn down and cleaned jun12)
aft cockpit port (#13) - Barient 35
aft cockpit stbd (#14) - Barient 35

Companionway Hatch Removal

  • Remove Forward Hatch Stop by removing three wood screws on the ceiling of the coach roof just forward of the companionway opening. Slide the stop out between the hatch and the coaming.
  • Remove the wood screws holding the hatch rails to the hatch. All screws except the furthest forward screws will be accessible. Once these are removed, the rails may be rotated outboard and the hatch slid aft to access the last two screws. Remove the hatch.


Power Train

The "Engine & Drive" section, pp. 5-6, of the previous owner's "Useful Info" has some data about the power train and how to operate it.

The Perkins engine SHOP and PARTS manuals are available electronically as listed in the "documents list".


  • Perkins 4-108 diesel (4-cyl, 50-hp), new to X-Dimension in 1989
  • Serial # ED70058U630095P (mfg 1987)
    (ED=4.108; 70058=parts list Nr; U=mfg UK; 630095=engine S/N; P=1987)
  • Heat exchanger: Bowman 3483, manuf 6/87
  • Raw water pump: Jabsco 3273 (3270 series)
  • Alternator: HEHR Powerline heavy duty (maybe series 23? from HEHR Power Systems)
  • Alternator V-belt: NAPA Premium XL 25-9425. One spare on boat as of April 2017.
  • Ideal operating RPM is 1800-2400. Ideal temp is about 79 degrees Cent. or ca. 175 degrees Fahrenheit. (from http://www.ftp.tognews.com/ListArchives/Engines/Engines%20(heat%20exchangers-overheating).htm 21-Jan-2013)

Engine Maintenance Log

These Perkins manuals may be helpful:

This Jabsco raw water pump manual might be helpful:

Pictures of the engine taken Jan 2013



  • Bolts in coupler were replaced May 2012

Stuffing Box

  • Nearly no leakage from stuffing box as of Nov 2011
  • Stuffing box adjusted Jun 2012 to allow slow drip during operation

Cutlass Bearing

  • Less than 1/32" play in cutlass bearing as of May 2012


  • We use 2 zincs for the propshaft (1 1/4”). Last replaced April 2017.
  • Max-Prop feathering 2-blade propeller, 17-inch. Rebuilt June 2014.
  • pitch before june 2014: 24 degrees (X: C; Y1: E; Y2: T)
  • pitch after june 2014: 12 degrees (X: D; Y1: E; Y2: T)
  • shaft rotates anti-clockwise when in forward (viewed from astern)


  • Vernalift (unidentified model & mfgr) Thomasville, GA

Fuel System

  • Emergency fuel cut-off: In tool bin just aft of fuel tank. Use inboard stopcock (outboard stopcock is for return fuel)
  • Filler deck fixture located port toe rail
  • Filler filtering: none
  • Primary fuel filter / water separator : under companionway stairs; Racor 500 FG S/S
  • Fuel inlet screen: TBD
  • Primary fuel lift pump: TBD
  • Fuel Tank:
    • Capacity: 40-gal, giving approx 288 miles @ 2000 RPM using 0.9 gal/hour at 6.5 kt
    • Tank cleaned/fuel polished May 2014 by http://www.powersurefuel.com/
  • Fuel gauges:
    • There is a mechanical fuel gauge located under the port main saloon bunk cushion. It is quite accurate when the boat is level.
    • The electrical fuel gauge(s) are not operative as of May 2012.

Fluids and Filters and Impeller

  • oil filter:

Perkins 2654403 / WIX 51515 / Napa 1806 / AC/DELCO PF2 (or 5575840) / Baldwin BT-216 / Fram PH 2821A / Sierra 18-7886

located aft end of engine, replaced April 2017. Two spares on boat as of April 2017.
  • fuel filter / water separator: Racor 500FG S/S
located under companionway stairs, replaced April 2017. Two spare 10 micron filter elements on boat as of April 2017.
  • fuel filter on engine: WIX 33166 / FRAM C1191A / NAPA 3195
located starboard aft end of engine, replaced April 2017. One spare on boat as of April 2017.
  • raw water filter: metal strainer
located in starboard lazarette, cleaned April 2017
  • raw water impeller: jabsco 1210-0001P (impeller kit)
raw water pump, new in March 2016, located port forward end of engine, Spare impellers and old raw water pump on boat
  • engine oil: changed March 2016
  • transmission oil: changed March 2016 (approx. 19 oz diesel engine oil, as per transmission manual). Checked April 2017 and found to be almost perfectly clean and the volume was fine.
  • coolant: changed June 2014



  • The steering wheel is trapped by the fiberglass cover in the center of the cockpit. Remove this cover to remove the steering wheel.
  • The emergency tiller is a long steel bar inserted into a square hole beneath an inspection portal in the fiberglass cover aft of the helm. The tiller is kept in the starboard lazarette.


  • When hauled in Nov 2011, the rudder was saturated with water. 4 holes were drilled to drain it over the winter, then plugged in May 2012.
  • The rudder was pulled Dec 2011 and the shaft repacked. Prior to this time there was a steady trickle of water entering the boat from the rudder post.


As delivered to MIT in August 2011, X-Dimension had 11 thru-hulls.
After Winter 2011/2012 refurb, the thru-hulls are:

  • port v-berth 1.5" - blackwater out
  • port forward of keel 1" - greywater out
  • port mid-keel 0.75" - toilet in
  • stbd mid-keel 0.75" - galley seawater
  • port mid-keel 2" - speed impeller
  • stbd mid-keel 2" - depth transceiver (epoxied in place)
  • stbd aft of keel 1.5" - galley greywater out
  • stbd mid cockpit 1" - engine in
  • stbd cockpit 1.5" - scuppers
  • port cockpit 1.5" - scuppers
  • port cockpit 1/2" at waterline - propane drain

There are two vestigial thru-hulls, one for an impeller and the other for a depth transducer. These are located just aft of the main cabin forward bulkhead, beneath the cabinets.

In June 2013 another thru-hull was added:

  • port v-berth 2" - combined speed paddlewheel/depth-sounder/water temperature

Bilge Pumps

There are two electric bilge pumps and two manual bilge pumps. An electric submersible pump is in the central portion of the bilge well. A diaphragm electric pump is in the cabinet beneath the nav station. Float switches for the two electric pumps are located in the bilge well. The diaphragm pump's float switch is in the deepest part of the bilge; it should energize first and keep the bilge dry. The submersible pump's float switch is forward and higher; it should energize if there is an inch or more water in the bilge.

The two electric bilge pumps are connected to the House batteries via the always-on "Bilge Pumps" breaker on breaker panel #1. Individual auto-manual-off controls for the electric pumps are located port of the nav station. Note that the "Bilge Pumps" breaker bypasses the House Battery Switch and the pumps will still operate if the House Battery Switch is off. (See X Dimension Bilge Pump Wiring)

The cockpit manual pump is located on the port bulkhead of the cockpit just forward of the helm. The high-volume manual pump is located under the floorboards of the hanging locker behind the nav station, and can be operated without removing the floorboards. The handles for the two manual pumps are stored in the hanging locker behind the nav station. The smaller handle fits the pump in the cockpit, and the longer handle the pump behind the nav station.

All bilge hoses exit the boat starboard of center at the transom.

Submersible Electric Bilge Pump

  • Rule Bilge Pump 1500 Submersible (new in 2012)
  • Specs: 12 DC; capacity 1500 GPH horizontal flow
  • Rule-a-Matic float switch in bilge, just forward of the submersible pump
  • Rule 3-Way lighted rocker panel switch by nav table

Diaphragm Electric Bilge Pump

  • Jabsco Electric Diaphragm Bilge Pump Model: 34600-0000
  • Specs: 12 DC; open flow capacity: 10.8 GPM (648 GPH)
  • Rule-a-Matic float switch in deepest part of bilge, aft of the submersible pump
  • Rule 3-Way lighted rocker panel switch by nav table

Cockpit Manual Pump

Located on the port cockpit wall just forward of the wheel.

  • Whale Gusher 10
  • Repair kit is West Marine part # 255658 OR 135038

Maintained April 2017.

High Volume Manual Pump

Maintained March 2017.

Note: the high volume manual pump is operated with the long handle from inside the locker behind the nav station. The pump itself is underneath the floorboards in that locker; the handle is inserted into the pump through a cut-out in the floorboards on the starboard side of the locker (to your left when looking into the locker). The cutout may be covered by stored items, such as PFDs, which must be removed to access the pump.

Strum Boxes

  • Strum boxes are 1 1/2" West Marine part # 100729, Whale mfg. part # SB5865


The head is a hand-operated marine toilet unit connected to a 25 gallon expanding holding tank. The output from the toilet goes into the holding tank. From the holding tank there are two hoses, one to a pump-out fitting on the deck, the other to a thru-hull under the forward cabin sink.

The forward facing panel beneath the sink in the forward cabin can be removed for access to the thru-hull valve.

The seawater in thru-hull is located port of center under the main cabin floorboards, just aft of the mast. A small mesh strainer is located inline soon after the thru-hull valve.

The toilet is Jabsco model 29090-2000 (compact bowl & seat).




There are two independent sets of batteries on the boat. The "Engine" battery (or "Starter Battery") is used for starting the engine. The "House" batteries supply power to most of the rest of the electrical equipment onboard.

The House batteries are charged by the alternator. The Engine battery is charged via the Balmar Duo Charge, mounted on the bulkhead above and just forward of the House batteries. A solar panel was installed in 2015 to trickle-charge the house batteries.

Engine Battery

The Engine Battery is a marine dual-purpose AGM battery. The battery is located in the port lazarette, next to the water heater, and under the propane tank.

The Engine battery is isolated by the Engine Battery Switch, located alongside the circuit breakers above the galley sink. The Engine Battery Switch is an on/off switch, located by the circuit breaker panels above the galley sink.

When the Engine Battery Switch is on, power is connected to the starter motor and to the "Ignition Switch" on the binnacle in the cockpit through the always-on 50 amp "Engine" breaker above the galley sink. The Ignition Switch on the binnacle powers the following circuits:

  • Starter button on binnacle (connected to starter solenoid)
  • Balmar charging regulator
  • Engine instruments in cockpit instrument panel
  • Engine temperature sensors, oil pressure sensor and alarm buzzer
  • Electric inline Fuel Pump located under port settee, just aft of the fuel tank

The Engine Battery Switch should be switched to OFF when leaving the boat.

House Batteries

The House battery bank consists of two Lifeline GPL-31T deep-cycle marine AGM batteries, tied together in parallel. This battery bank is located in the starboard lazarette, just aft of a bulkhead that separates the lazarette from the main cabin. The House battery compartment is usually covered by a white wooden tray that contains winch handles.

The House battery bank is isolated by the House Battery Switch, located alongside the circuit breakers above the galley sink. The House Battery Switch is a four-way switch located by the circuit breaker panels above the galley sink. During normal operation of the boat, the House Battery Switch should be switched to the "House" position. This allows the house battery bank to be charged by the engine, and to power the various 12-volt devices through the breakers above the galley sink.

The House Battery Switch should be switched to "OFF" when leaving the boat.

The two additional positions on the House Battery Switch will enable parallel use of the House battery bank and the Engine battery, and should only be used in case of emergency. (See Emergency Battery Operations) Note that the Engine Battery Switch must be ON in order to use the House Battery Switch as an emergency parallel switch.

Solar Charging

A 55-watt Ganz GSP-55 solar panel is installed on the v-berth hatch. The cable snakes through the dorade box into the head, then along the port wiring conduit. It connects to a Morningstar SunSaver MPPT solar controller which charges the House battery bank directly (not through the House Battery Switch).

Circuit Breaker Panels

As of September 2016, there are four circuit breaker panels above the galley sink, and one panel in the cockpit.

  • Note: Any circuits that are not currently connected will be labeled "N/C" with blue tape at the circuit breaker.

Circuit Breaker Panel 1

# Name Amps Power Source Notes
1 BILGE PUMPS 25A House Battery Powers both bilge pumps. Bypasses the House Battery Switch. LEAVE THIS BREAKER ON AT ALL TIMES
2 ENGINE 50A Starter Battery Switch Powers the starter button, the engine instruments, and the alternator regulator. LEAVE THIS BREAKER ON AT ALL TIMES
3 FUEL PUMP 10A Ignition Switch Powers the inline electric fuel pump. No longer necessary for operation of the engine as of Summer 2014

Circuit Breaker Panel 2

This is a "normal" circuit breaker panel in that all of the circuits are fed by the House Battery Switch. This panel contains the circuits that are most likely to be used most of the time during sailing trips. The breaker names and their rated amperage are listed below:

# Name Amps Notes
1 NAVIGATION LIGHTS MASTER 10A Supplies power to the Navigation Lights switch panel (see below).
2 NAVIGATION INSTRUMENTS 10A Supplies power to the Garmin GPSMap541 chartplotter, the Garmin GM10 display unit, the AIS transponder, and instruments on the NMEA2000 bus.
3 VHF RADIO 10A Supplies power to the fixed-mount VHF Radio located at the navigation station.
4 RADAR 5A Supplies power to the RADAR display unit and the RADAR antenna.
5 HORN 5A Supplies power to the horn (the button is located on the binnacle).
6 FRESH WATER PUMP 10A Supplies power to the fresh water pump. Do not turn it on if the fresh water tank is empty.

Circuit Breaker Panel 3

This is a "normal" circuit breaker panel in that all of the circuits are fed by the House battery switch. The breaker names and their rated amperage are listed below:

# Name Amps Notes
1 CABIN LIGHTS 30A Supplies power to the various cabin lights onboard.
2 STEREO 15A Will supply power to the AM/FM/CD-Player stereo system.
3 PROPANE 5A Will supply power to the propane tank solenoid valve circuit, necessary for operation of the propane stove. Note that, in addition to this circuit breaker, a switch above the stove must be turned on to activate the propane solenoid.
4 FRIDGE 15A Supplies power to the 12-volt compressor used to chill the refrigerator.
5 BILGE BLOWER 15A Turns on the bilge blower.
6 12V AUX SOCKETS 10A Will supply power to 12-volt "cigarette lighter" type sockets. Three in the cabinet with the back of the GPS, two at the nav table, one in the radar/radio bay, and one in the v-berth.

Circuit Breaker Panel 4

As of September 2016, this Breaker panel is not being used. Some of the breakers may be used for other circuits in the future. Some of the space on the panel may also be used for ammeters in the future.

Nav Lights Fuse Panel

The dark grey plastic panel in the cockpit, starboard of the wheel, is a Blue Sea Systems "WeatherDeck Waterproof Fuse Panel". The navigation lights on the boat are controlled through this six-position panel.

Power to this panel is supplied by the "Navigation Lights Master" circuit breaker on the control panels above the galley sink. Each of the six circuits is protected by an internal blade-type fuse. When power is supplied to the panel, and the corresponding fuses are not blown, then the circuit indicator labels will glow red. When each circuit is switched on, then the label will glow green. If the label does not glow, then the fuse is probably blown. Please see the instruction manual for fuse replacement.

# Name Amps Notes
1 RUNNING LIGHTS 15A Powers primary sidelights (in bow) and sternlight
2 STEAMING LIGHT 15A Powers "masthead light" halfway up the mast
3 TRI-COLOR 15A Powers the tri-color ligth at the top of the mast
4 ANCHOR LIGHT 15A Powers the anchor light at the top of the mast
5 FOREDECK LIGHT 15A Powers the foredeck light halfway up the mast
6 INSTRUMENT LIGHTS 15A Powers the compass light and the cockpit instrument panel lights

Cabin Lights

A bundle of Black/White/Red/Yellow #14 wire runs the length of the port and starboard sides of the cabin, with the starboard set extending into the v-berth. The "Cabin Lights" breaker feeds the White circuit with Black as the return. (Red for night lights and Yellow for foot lights are currently unused. One of these two may have been co-opted for the anchor light). Red night lighting is selected locally at each light fixture. Amperages are for brightest setting and are by manufacturer's specification, not observed.

Light Type Qty. Amps Per Fixture Total Amps
Forepeak White/Red LED strips 1 0.30 0.30
V-Berth (starboard and port) Brass fixture w/ LED lamp 2 0.12 0.24
V-Berth Vanity Brass fixture w/ LED lamp 1 0.14 0.14
Starboard Lockers (fore and aft) White/Red LED fixture 2 0.08 0.16
Head Round White/Red incandescent fixture 1 0.15 0.15
Main Cabin Berths 6" White LED bar fixture 5 0.08 0.40
Main Cabin Lights (starboard and port) White/Red LED strips 2 1.00 2.00
Galley Ceiling Light Round White/Red LED fixture 1 0.48 0.48
Galley Stove Light 12" White/Red LED fixture 1 0.10 0.10
Nav Table Chart Light 12" White/Red LED gooseneck 1 0.75 0.75
TOTAL - Cabin Lights 4.72


Seafit "Model L" Compact Horn

  • 106 dB SPL at 1 meter
  • 3 Amps

The horn is mounted on the underside of the lower port-side spreader. The horn button is a stainless steel button on the right side of the binnacle, next to the starter button. Power is fed through a dedicated 5-amp breaker.


Jabsco blower, located inside the bulkhead, directly above the Nav Lights Switch Panel.

Navigation Lights

Requirements for navigation lights for vessels > 12m in length:

  • Steaming light: visibility 3 nm (luminous intensity 12 cd)
  • Sidelights, sternlight, anchor light: visibility 2 nm (luminous intensity 4.3 cd)
Tricolor, Anchor


  • Model: Aquasignal Series 40: tricolor / anchor / quicfits (Model # 40706)
  • "Quicfits" connector means that the unit can be easily unclipped from the top of the mast by squeezing the black tabs at the bottom of the unit and pulling the whole assembly up.
  • Bulbs:
    • tricolor: 12V, 1W, BA15D bayonet base (Tri-Color Polar Star 40 MKII - Dr. LED Part# 8001450-02)
    • anchor: 12V, 1W, BA15D bayonet base (White Polar Star 40 MKII - Dr. LED Part# 8001757-02)
  • Visibility (from Dr. LED website):
    • tricolor: 2nm
    • anchor: 2nm
  • Dr. LED Website

Steaming/Foredeck Light

Forespar Combination Deck/Masthead Light - Model ML-2

  • Steaming light: festoon bulb, 0.8 amps, type WN-211 (Forespar part #132025)
  • Foredeck bulb: 20W bi-pin quartz halogen bulb (Forespar part #132035) or (Ancor part #521125)
  • Forespar Website


The sidelight are mounted in small chambers molded into the fiberglass hull. The compartments have red and green lenses. The bulb sockets are held in place by small aluminum plates that are screwed into the fiberglass hull.

  • Bulb: Type #1004: BA15D bayonet base, 12.8v, 1.0 amp, 12.8 Watt, 12 MSCP (0.9 cd)

Note: these should be replaced with #1152 bulbs: 12.8v, 1.34 amp, 21 MSCP (4.6 cd)


  • Bulb: festoon bulb 1-1/4" x 13/32" (31.7 mm x 10.3mm)

Make and model of bulb is unknown, but Ancor 529102 (West Marine #297367) might work: 13.5v 0.83 amp, 8 cd 31mm x 10mm


The 110v system is inoperative as of May 2012.

  • The shore power connector has been disconnected.
  • All the 110v breakers have been removed.
  • The wiring to the 110v outlets is still in place but is disconnected at the breaker panels.
  • Three 110v outlets (non-GFCI) are located:
    • in the head
    • just forward of the stove
    • starboard locker, just forward of the mast

Note that there is an 800 watt DC-to-AC inverter on board.


  • There are two zincs clamped to prompt shaft, new as of March 2016. (Typically replaced each spring.)
  • There is an external zinc "guppy" that is deployed at the stern while the boat is on the mooring or at the dock. New as of May 2015.

Lightning Dissipation

  • The boat is fully grounded, with a woven copper strip connecting the mast, shrouds, and engine block.
  • The mast step is electrically connected to the keel via a grounding strap from the mast step to a keel bolt.
  • The only bonding from the grounded systems to salt water is via the propeller shaft via the engine block.


Fixed mount GPS

  • Garmin GPSMap 541 Chartplotter
  • mounted in cockpit bulkhead, port of companionway
  • antenna is located on the cockpit rail port of center aft of the helm
  • communicates with GMI 10 display, wind instruments, depth sounder, and AIS transonder via NMEA 2000 network
  • sends position data to VHF500dsc radio (one-way communication) via NMEA 0183 data connection.

Garmin GMI 10 Sailing Instrument

  • mounted in cockpit bulkhead, port of companionway
  • can display various parameters, such as depth, apparent wind speed and angle, true wind speed and direction, speed over ground, etc.
  • Communicates with GPSMap 541, wind instrument & depth sounder via NMEA 2000 network


  • Garmin GWS 10
  • senses wind speed and angle
  • communicates with GMI 10 display and GPSMap 541 via NMEA 2000 network

Depth Sounder

  • Garmin Thru-Hull Intelliducer (depth sounder)
  • located starboard of center aft of forward main cabin bulkhead inside of cabinet
  • communicates with GMI 10 display and GPSMap 541 via NMEA 2000 network

NMEA 2000 network

The NMEA 2000 network on X Dimension entirely consists of instruments, cables and connectors manufactured by Garmin. All connectors are NMEA 2000 "Micro" connectors. The network consists of a backbone that runs from the cabinet on the port side of the companionway to the top of the mast. The backbone requires a terminator at either end. The backbone also requires 12v DC power to operate; this is supplied by the yellow power cable.

The network consists of a backbone, and various "drops" that interface via "T-connectors". The drops on the network currently are:

  • Garmin GMI 10 display
  • Garmin GPSMap 541 chartplotter
  • Yellow 12v DC power cable
  • Garmin Intelliducer depth sounder
  • Garmin GWS 10 wind instrument
  • Vesper XB8000 Class-B AIS Transponder
  • Arduino-based data logger

The GMI 10, GPSMap 541, and Vesper XB8000 have their own power connections. The depth sounder and wind instruments draw power from the network.

The network cables have five conductors:

  • Red: +12v DC
  • Black: Ground
  • White: Data+
  • Blue: Data-
  • bare wire: shield


  • JRC RADAR1000 mounted display
  • installed in cubby over Nav Station table
  • antenna mounted on pole on port quarter.

AIS Transponder

  • Vesper Marine XB-8000 Class-B AIS Transponder
  • Mounted in cubby above Nav Station (behind radar display)
  • Tied into NMEA2000 network
  • Transmits through VHF antenna on top of mast through an active antenna splitter (Vesper Marine WP160)
  • Transponder and splitter are both powered from "VHF Radio" breaker
  • GPS antenna currently (8/7/2015) located in cubby next to the transponder
  • Accessible via Wifi: SSID is "VesperXB". Password is written next to the device


Fixed VHF

VHF Marine Radio
  • West Marine VHF500dsc Fixed Mount Marine Radio
  • Receives GPS data from Garmin GPSMap 541 via NMEA 0183 connection (GPRMC sentences)
  • MMSI Number: 338137891
  • Operator's Manual: File:VHF500 English.pdf

Handheld VHF

West Marine VHF55 VHF Radio

AM/FM/CD Stereo

Dual MXD25

Includes 1/8" auxiliary audio input jack and USB charger jack on front panel.

Magnetic Compasses

  • Binnacle Compass
    • make and model: Danforth "Constellation"
    • has not been swung (Aug 2012)
    • rebuilt Apr 2012
    • illuminated by "INST LIGHTS" switch on navigation lights switch panel
  • Starboard Bulkhead Compass
    • make and model: Plastimo "Contest" (Classe B)
    • "tactical" compass card
  • Starboard and Port Rail Compasses
    • make and model: Danforth "Corsair"
  • Nav Station Compass
    • make and model: Suunto Type B-110



  • Stove is propane fired. The tank is in the port lazarette, with a cutoff solenoid. Both the panel switch and the dedicated switch above the stove must be on for the solenoid to open.
  • 3 burners on top
  • Oven has a bottom (bake) and smallish top (broil) burner.
  • Oven interior is 17 7/8" wide x 11" deep x 9" high. One rack.

Refrigerator / Ice Box

Fridge Compressor (looking forward)
Fridge Compressor (top)
Compressor rear label

The refrigerator / ice box is located beneath the galley counter and can be accessed via two hinged hatches. There is a shelf in the refrigerator compartment that will accommodate ice blocks.

The refrigerator compressor is made by Alder/Barbour. The exact model is unknown but appears similar to the ColdMachine model.

The compressor runs on the 12V house battery and is located in the starboard lazarette outboard of the house battery box. The compressor is powered by a 15A breaker on breaker panel 2 above the galley sink. A thermostat in the ice box controls operation of the compressor.

The compressor has two blade type fuses located at the outboard aft corner:

  • 15A Main
  • 5A Fans

A diagnostic LED is on the rear panel; the cadence of the LED's flashing indicates the specific problem with the compressor.

See also: File:Adlerbarbour manual.pdf Operating manual for Alder/Barbour refrigeration systems


  • Pots (largest 6qt), pans, kettle below counter to starboard of sink
  • Plates, cups, bowls above counter starboard of sink
  • tableware in drawer above counter starboard of sink
  • Dry goods above stove
  • More dry goods above counter, starboard of icebox
  • Lighter, utensils, mitts, bags in drawers next to icebox

Fresh Water

  • 80 gallon tank with small pressurizing pump for galley sink and head sink.
  • CE Water Pressure Pump 2.4 under nav table


Fire Extinguishers

  • hand-held: 3 ABC-1 extinguishers purchased Sep 2011
    • Next to porthole above galley sink
    • Under navigation table
    • On forward bulkhead inside starboard lazarette
  • fixed mount: halon tank directly beneath cockpit


  • 8 Type-I orange PFDs
  •  ??? Type-III life vests (2 small, 1 medium, 2 large, 1 x-large)
  • 2+ Type-V inflating PFDs (2 Kru with safety harnesses/lights/storm hoods, ? without)
  • 4 Spinlock Deckvests inflating PFDs with harnesses/lights/storm hoods. These are not USCG approved.

Note: 2 Type-II orange PFDs are kept in the lock box on the dock.


  • 4 square blue throwable cushions (Type-IV PFDs)
  • Lifesling man overboard recovery system (Type-IV PFD)

Harnesses, Jacklines, Tethers

  • harnesses on 6 inflatable PFDs that are on the boat
  • 7 tethers
  • 2 jacklines (one for each side of the boat)

Visual Distress Signals

  • Orange plastic cylinder with flares is on shelf on forward starboard bulkhead wall in main cabin:
    • 4 red day/night handheld flares
    • Flare Gun
    • 4 red day/night 12-gauge meteor flares
  • Orange smoke canister on shelf on forward starboard bulkhead wall in main cabin