Airdock Boat Lift - $2000 (Seattle)

posted Oct 28, 2018, 4:36 PM by PacificNorthWest MultihullAssoc   [ updated Oct 29, 2018, 4:26 PM by William Quigley ]

The Airdock boat lift uses four inflatable bags to lift a boat out of the water. Unlike other boat lifts, the Airdock has no permanent attachment to the seabed or to the dock, so it's permissible in marinas that do not allow boat lifts. It can lift a boat up to 34 feet long and 10,000 pounds. I've been using this Airdock for 6 years and it's in great working condition. I recently replaced the blowers on the air pump. Located at Shilshole Bay Marina. Great for multihulls and power boats. Saves thousands of dollars in haulouts and antifouling paint, which may be illegal in a few years.
Includes 4 air bags, PVC frame (approx 28' x 10', dismantles for trailering), hoses, blower, extra (new in box) size "D" bag, and patch/repair kit.
Originally cost over $6000, not including spare air bag. Email


posted Oct 2, 2018, 3:42 PM by PacificNorthWest MultihullAssoc   [ updated Oct 3, 2018, 5:26 PM ]

Selling a custom-made catamaran/trimaran/proa kayak "tribrid-drive" (paddle/sail/motor) expedition vessel.

This vessel was conceived, designed and built to safely take my family of 4 out on shoreside camping adventures around the Pacific Northwest without fear of overturning and dying of hypothermia. The 13-foot beam ensures this. We have logged many thousands of trouble-free miles over 8 solid years on these boat(s)...many trips on the Salish Sea/Sunshine Coast/Desolation Sound areas, east inland on freshwater Lakes Roosevelt, Chelan, Pend Oreille, Flathead, and Hungry Horse Reservoir, and Yellowstone, a trip from San Francisco up the Delta to Stockton, and another down the Columbia to (and across) Cape Disappointment. Trips lasted from a quick weekend to several weeks each.

Kids now in college, and I am almost done building a larger custom power time to move on and sell this boat.


-Main hulls are (2) 20' 10" Seascape Expedition double kayaks with center storage hatch. These boats are a workhorse staple of the Northwest kayak touring scene, and are still made and supported. You can Google "Northwest Kayaks" for more info.

-The cheap original plastic bulkheads were removed and replaced with substantial foam/glass bulkheads to take the crossbeam loads and compartmentalize the hulls into 5 (each hull) watertight compartments.  The boat will not sink even if severely punctured.

-Amas repurposed from Hobie 14 hulls...stripped down, lowered 6 inches, and re-glassed with new foam tops/bulkheads, and stainless plates under the deck to take the load of the aka fittings.

-Boat designed around a modular system that uses standard 1.5" aluminum pipes and aluminum Speed-Rail fittings. One 3/16” allen wrench (included!) allows the lock down or release of the pipe into any of the hull or ama fittings. Careful alignment during the build allows all the pipes (crossbeams) to slide in easily, even when under load, even at sea.


Boat can be set up in 3 ways:

--- CATAMARAN. This was the original design. Two hulls and three crossbeams. As the crossbeams are NOT in plane this is by far the stiffest configuration. 4 sails, 2 pivoting leeboards and 2 motors. (One motor drives it fine but always nice to have a backup). Also a custom-made heavy-duty fiberglass "grating rack" can be installed in-between the hulls in this configuration which can be used to store massive amounts of gear and has even been used as a sleeping platform (for one person). Beam can easily be adjusted on the water for closer communication with the other boat or to come into a narrower area.

---TRIMARAN. This configuration was built from Hobie 14 hulls several years back to allow either one or two people to avoid having 2 or 3 empty seats when in catamaran mode. Boat sails very well this way with 2 sails, 2 boards and one (or 2) motors. Boat in this configuration traveled from the Grand Coulee Dam all the way up to the Canadian border on a 9-day long solo trip.

--PROA. After the trimaran configuration was proven it was found that the performance using just one ama and 2 crossbeams (proa) was surprisingly good. The weight of the extended hull is plenty to counteract the sail forces. Extra pipes were purchased to allow two 2-person proas to run at the same time, linked together via a very-duty hinge system. With the 2 boats linked the beam of the "boat" is about 20 feet, yet because of the articulation the boat does not rack in heavier water.


Boat can be paddled, sailed and/or motored:

---PADDLING. Boat is of course heavier than a simple kayak, so paddling is a bit harder, but it can be done. Boat was designed with this in mind and there is a clean sweep of the paddle on either side from all seats in any configuration.

---SAILING. Boats sails faster than you can paddle even in minimal wind speeds. High end cambered Balogh sails and proper daggerboards allow very good upwind performance. Sails are very nice and have an ingenious "zipper" reefing system that allows you to retain some semblance of sail shape (and thus boat control) in higher winds. Boat had seen 13 knots in trimaran configuration in swells off Tofino.

---MOTORING. Boat can be driven, in any configuration, at 6 knots with one (1) Honda 2 HP outboard at 2/3rds throttle. Gets about 32 miles per gallon, so all day on a gallon is quite possible. Boat comes with 2 motors and 2 adjustable aluminum/plastic mounts. I have often taken both just to have a backup motor but neither of the ultra-reliable Hondas have ever had a problem. Motors have been highly maintained with fresh fluids twice a season, and are air-cooled so there is no way for salt water to get into the block.

This is an overbuilt boat that has seen heavy water with no issues...rock solid construction. All critical bulkheads were rebuilt out of foam-core/bi-ax glass to take the loads of the large beam. Zero stress cracks in gel near fittings and no signs of any structural issues.

An article on this boat written by the builder/owner was published it the August 2011 issue of the (now dead) Sea Kayaker magazine...mostly on the design and build. I have copies of this to share, as it might shed light on the boat.


Sale Includes: Two kayaks, two amas, all poles, mounts, brackets, 4 battened sails, 4 masts, 2 custom pivoting leeboards, custom central storage/sleeping rack for use in cat mode, modified Trailex aluminum trailer (currently licensed/titled), Garmin color GPS with Salish Sea chip, emergency anchor, fuel tanks, 2 (two) Honda air-cooled long stroke outboards, 4 paddles, 4 skirts, dry bags, etc.

The only downside of this boat is that it is impossible to launch it without a bunch of people lining up and asking all about it!

Price includes a half-day session at/on the water near Seattle to show setup, sailing, usage tricks and breakdown.

If you show up with some kids who seem genuinely excited about the prospect of learning how to use these boats to navigate this area while sleeping under the stars on a pristine beach next to the salt chuck I will lower the price. I sincerely feel this vessel has been a transformative "vehicle" for my family and would like nothing more to see it used to that end in the future...

Contact David at or 206-747-4586

Shilsole End Tie Sublet

posted Jun 19, 2018, 4:33 PM by PacificNorthWest MultihullAssoc

Shilshole moorage sublet:  48'+ outside end tie moorage sublet available July and August.  Asking $800/mo.  It might fit a longer boat.  Let Eric know if interested and I will put you in contact with the owner.  Eric1207 at gmail dot com  It may be a few days before I get to my emails...Eric Lindahl

For Sale: 80-90% complete Wharram Raka 36' project

posted Jan 31, 2018, 9:53 PM by PacificNorthWest MultihullAssoc

Approximately 500-1000 hours work remaining to full completion (approximately 3,000 hours into the build already).  Built by an aircraft mechanic who had previously built a Cross trimaran - so an experienced builder.  Asking price includes all tools and materials (table saw, planers, hand tools, power tools).  Asking price also includes mast/boom, schottenheimer sails, near new Yamaha high thrust 9.9 long-shaft outboard, running rigging, and standing rigging.  There isn't much to be purchased to get this sprightly cat to completion.  The Raka is the performance catamaran of the Wharram designs.  It would make an excellent R2AK boat!  For the right buyer it is possible that it could be completed at the Seller's home where it is out of the weather under a quonset shelter in the Gig Harbor area.  She is demountable for loading and launching.  Asking $35k obo.  Contact Matthew Dunning 206-297-1151 or email

1989 Corsair F-27 R2AK Racer "SISTERSHIP" is for sale

posted Sep 29, 2017, 1:13 PM by Steve Keever   [ updated Dec 20, 2017, 12:04 PM by PacificNorthWest MultihullAssoc ]

 1 2 3 4 5

condition: like new 
length overall (LOA): 27 
make / manufacturer: Corsair 
model name / number: F-27 trimaran 
propulsion type: sail 
year manufactured: 1989 

1989 Corsair F-27 TRIMARAN  

"Sistership" is for sale. Retrofitted in 2016 to compete in the Race to Alaska. She is turnkey ready with rowing stations installed on each of the amas with14 ft sweep oars and ready for a repeat bid for the R2AK. (Race to Alaska) These can also be easily removed for other racing and cruising needs.
She comes with a list of state of the art options for high performance racing and adventure or easy cruising. 
"Sistership" is like a brand new Corsair with all of her retrofits and new lightweight all Dux dyneema rigging and new carbon fiber sails. You will not find a nicer F-27 in the country. 

Located In: Ventura, CA (will negotiate transport to your location)
Current Price: US$ 65, 000
Year: 1989 Trimaran
Construction: Carbon fiber, fiberglass, Kevlar, foam
Rig: Fractional Bermuda or Marconi rig with spinnaker
Keel: Centerboard
LOA: 27.1 ft
LWL : 26 ft
BEAM: 19.1 ft (8 ft folded)
DRAFT: 4.9 ft (board down) 14" (board up)
HULL WEIGHT: 2,600 lb

Engine/Fuel Type:
• Single Outboard Yamaha 8 hp 4 stroke / Gas 4-stroke outboard. 
• Electric start 
• Cockpit controls mounted (Recently serviced and New control cables installed to cockpit controls.)
• New 2017 Garmin Wireless wind speed/direction/depth monitor. 
• New 2017 Garmin GPS 742xs chart plotter.  
• 2016 Standard Horizon GX 2200 VHF radio with AIS/DSC capacity, 
• New 2016 ATC WiFi Converter, 
• Autohelm ST 1000+, 
• Victron Energy Blue Solar smart solar charging system, 
• 100 watt solor panel installed on stern pulpit 
• New Ritchie compass 2016

Sail Inventory : 
• New in 2016 MAINSAIL Northwest Sails Custom carbon fiber racing full battened and Mainsail has 2 reef points. Roller reefing around boom. You can reef as small as you like. 317 sq ft 
• New JIB 2016 Northwest Sails roller furling battened 167sq ft.
• New 2016 Colligo jib-reefing and roller furling system.  
• Screecher with roller furling
• asymmetrical spinnaker.
• symmetrical spinnaker. 
• Additional cruising mainsail and jib included. 
• Retractable bow pulpit. 
• Spinnaker pole included 

• New 2016 Dux Dyneema rigging built by Colligo Marine, 
• installed by reknown Brion Toss Rigging

Running Rigging:
• New 2016 from Cajun Ropes with PX cleats. 
• New endless main sail sheet with new blocks 2016
• All lines to cock pit 
• 3 winch handles. 
• Self-tailing winches All winches serviced 2016.
• MAST: sanded / painted and refurbished and all hardware replaced by Point Hudson Boat Shop in Port Townsend 2016
• All new chain plates replaced and installed new 2016
• (2) 79 amp hour Premium AGM Performance battery, selector switch, New 2016 and 2017
• Quest 6A automatic battery charger
• New LED Tri-color masthead and anchor lights new 2016. 
• 100 W solar panel mounted on stern pulpit
Emergency / Safety Equipment: 
• New 2016 ACR Global Fix Satellite 406 MgHz EPIRB
• New 2016 Tri-Lens Radar Reflector
• New Flares, horn, fire extinguishers up to date. 
• New 2016 VHF- Garmin GX 2200 has DSC and AIS capabilities
• New 2017 AIS receiver and transmitter. Links with chart plotter or I-pad via blue tooth.
• Life sling, mounts on stern pulpit 
• New Fire blanket installed in galley 2017

Ground tackle: 
• New 2016 Bow anchor 10kg Sea Dog claw anchor with New 15' chain + 150' line
• Stern anchor 15# Danforth with 100' polypropylene line.  

Galley / Interior
• 4000 2-burner alcohol stove.  
• Cabin table 
• Sleeps 5 / interior cushions (side berths with Lee cloths)
Water Capacity: 
• New 14 gallon tank new 2016
Head: vanity unit and sink.
Holding tank 16 gal capacity
• New 2017 Spare custom wood tiller handle
• Tiller extension pole
• Cockpit Bimini cover
• sumbrella pop up cover fitted when hatch is popped up,
• Custom made companionway sumbrella cover for offshore use
• mainsail cover
• Stanchions and life lines 
• Spinnaker pole
• Interior cushions and table cockpit cushions
• New DECK PAINT and NON-SKID 2017 
• Deck lifting eyes (never lifted)
• Cockpit cushions
• Interior Lee cloths installed 
• Owner's manual and all paper work. 
• Splash zone repair kit ($100 value)
• Sail repair material kit
• Cockpit life harness tether attachment points.

• 1991 Pacific Trailer serviced and overhauled in 2017. New suspension, dual hydraulic brakes and swivel mount wheel and crank
• New shocks 2017
• New Tires (5) including spare 2017

1997 Corsair F-28R For Sale

posted May 11, 2017, 11:34 AM by A Rice   [ updated May 12, 2017, 11:21 AM ]

1997 Corsair F-28R "Kinetic Ki" has a fiberglass hull with a carbon fiber rotating mast w/ controls port & starboard led aft to the cockpit and carbon fiber retractable spinnaker pole. Sails consist of a new 2015 U/K carbon main, (used 12 times until cervical health issue prompted retirement), a Calvert main, two jibs, (one fully battened), two asymetrical spinnakers, and a roller furling screecher. Two new 2015 Anderson spinnaker winches, (same usage as new mainsail). A Honda 9.9 four stroke outboard motor, and galvanized dual axle trailer. Interior has a Wallas 800 kerosene combination stove/heater, sink w/ manual hand pump and ~ 10 gallon fresh water tank, fixed head w/ holding tank, VHF and cushions. Ground tackle is a Bruce w/ chain and rope rode. If you've sailed one of these well designed & engineered tris, then you know how safe and much fun they are to sail ! Someone else's turn to own it now. 



Skagit, WA

Jim Lawson's F-31RS is for sale....SOLD

posted Mar 28, 2017, 2:05 PM by Steve Keever   [ updated Dec 20, 2017, 12:06 PM by PacificNorthWest MultihullAssoc ]

FOR SALE, F-31RS, #173, year 2000, weight 3850 lbs, Excellent condition (only used 3 months out of each year), 95% fresh water use, Excellent racing sails all Calvert (Main, Jib, Screecher & Spinnaker).  Aluminum trailer. Sails are generally 3 years old, but the boat was not used hardly at all the last two years.  I turned 80 and decided the time has come to let it go.  I won the F-31 National Championships held off Alameda in S.F. Bay in 2013 (or 2014) and have won the Delta Ditch Run (67 mile race from the Richmond YC to the Stockton SC) twice.  The boat is worth $90,000 will accept $80,000.  The boat is kept in Klamath Falls, Oregon.  Please reply to my email address.   Jim Lawson 

Hi5 for sale - CORRECTION!!!! SOLD!!!!!

posted Apr 10, 2016, 10:51 AM by PacificNorthWest MultihullAssoc   [ updated May 15, 2017, 1:17 PM by Steve Keever ]

Updated sale price of US$ 149,900.00 - before any changes to NAFTA have been implemented.

Yes, we are selling our beloved F-33 "Hi5".

Active sailing is no longer in my future (severe back problems). No, it's not sad for me. I knew that sooner or later I would have to face these facts. I had a good run so far.   Details can be found at and  
For more details please contact who is our broker.


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