Why is Cuan Law named Cuan Law? (part 1)

Cuan Law is the third in the fleet of trimarans designed and built by Duncan and Annie Muirhead. Duncan is of Scottish heritage and his family home overlooks the Misty Law mountain range there. Law is Gaelic for mountain. Their first vessel which was more of a collaboration than an original Duncan design was named the Misty Law in memory of these mountains as Annie and Duncan took off for their sailing adventure in 1969.

Why is Cuan Law named Cuan Law? (part 2)

In the late 1970’s they planned, designed and and built the next vessel, a luxury live-aboard dive vessel. This one, the Lammer Law, was named after the largest mountain in the Misty Law range.

Duncan and Annie could not stop at two, so the third one came along and they started construction in June 1987, but although they wanted to stick with the “Law” tradition, they had run out of names.

Why is Cuan Law named Cuan Law? (part 3)

They decided to ask former guests to come up with ideas and following in the Gaelic tradition, Cuan Law was submitted. At the time they all understood Cuan to mean Ocean, hence Cuan Law = Ocean Mountain, quite apt for the largest sailing trimaran in the world. It was discovered a while later that another dialect of Gaelic translates Cuan to mean peaceful, which is also lovely, so Cuan Law = Ocean Mountain, or Peaceful Mountain!

Cuan Law Specifications

CUAN LAW is the largest sailing trimaran in the world.

Designer: Duncan Muirhead
Owner: Trimarine Boat Co. Ltd.
Builder: Hike Metal Products Canada in Gananoque, Ontario
Hull construction: Carvel joined aluminum alloy plating stitch welded over full frame armature of aluminum alloy sectional beams.
- Stem plating: 3/8” aft to cutwater.
- Bottom plating: 5/16” keel up to chine.
- Topside plating: ¼”
- Deck plating: ¼”
Length on deck: 32 meters (105 feet)
Length at waterline: 29 meters (95 feet)
Beam: 13.5 meters (44 feet 4 inches)
Draft: 2.9 meters (9 feet 6 inches)
Displacement: 75 tons with fuel and water
Rig: Equal masted stay sail schooner
Working sail area: 480 sq meters (5,200 sq. feet)
Mast height: 31.4 meters (103 feet)

Cuan Law Specifications

Engines: 2 x 210 hp Caterpillar 3208 N/A diesels to drive two feathering propellers
- 1 x 20 kw Northern Lights M9441W2
- 2 x 33 kw Northern Lights M984W
- 1 x 65 kw Northern Lights
Watermakers: 2 x Reverse osmosis component systems
Speed under power: 8-10 knots
Speed under sail: 6-14 knots
Air fills: 2 x electric Mako compressors of 18 cfm capacity and full Nitrox capability

Cuan Law Specifications

Guest Accommodations: 10 x two person staterooms with private bathroom, all available as either Queen or Twin.
Crew accomodations: 5 x two person staterooms, three with private bathroom, two with a shared bathroom.

Navigation Electronics:

Plastimo Olympic Model 135 Compass
Depth Sounders
B&G V12 Charter Plotter Navigator
B&G Display
B&G Course Computer Auto Pilot and Hydraulic Helm pilot
Standard Horizon Explorer Gx1600 VHF Radio
6 Standard Horizon portable VHFs

Deck Equipment

- 2 x 80kg Lewmar claw w/ 325’ of 5/8” chain on each
- 2 x 80kg Bruce Plow anchors with 3 strand warps
Windlass: Lofrans Ercole 24V Horizontal reversing with docking capstan
Personal Floatation Devices
- 30 Type I Adult PFD
- 12 Type III Adult
- 5 type I child PFD
- 5 type III child PFD
- 4 type IV ring buoys, 2 with strobes
Life Rafts: 2 x Zodiac Survitec Solas 16 person, canister mount at aft deck
ACR Epirb is bulkhead mounted forward on the aft deck


2 x 6 meter rigid inflatables 2011 custom built by Blue Spirit of Holland using military spec tubes and hull
150 HP commercial Mercury 4 stroke outboards
Tenders have console steering with instrumentation, switches and hydraulic steering.
Stainless steel rear boarding ladder
Bilge pumps and auto drain tubes.

Staysail Schooner Sail Plan

A - Jib
B - Jib (furled)
C - Trisail
D - Staysail
E - Staysail (furled)
F - Main Sail