Multihulls!

PROA FILE is devoted to design, experimenting, sailing, history and generally messing about with multihulls. Join us!

11 December 2014    4 comments

Water Bug - an SUV catamaran powerboat

The Water Bug is an experimental catamaran motorboat designed and built by Russell Brown of Port Townsend Watercraft. It uses a pair of Tornado catamaran hulls as the base, and is extremely efficient, getting 20mpg at 11 knots, while loaded AND pulling a dinghy. Russell uses it like a water-born SUV - hauling stuff and going camping. The “car” is plywood/epoxy construction, it was drawn on the back of an envelope so there are no…

 smallcraft power catamarans

16 November 2014    0 comments

Best In Show

Congratulations are in order for Larry Haff who won Best in Show - Contemporary Class at the Mid-Atlantic Small Boat Festival in St. Michaels, Maryland. He entered his cedar strip-planked Ulua outrigger canoe, a design of New Zealand based Gary Dierking. Via Gary’s blog: Outrigger Sailing Canoes.

 outriggers boatbuilding

20 October 2014    8 comments

Before You Die

If competing in a real offshore multihull race with a decent chance of winning is on your bucket list, and you don’t happen to be a Silicon Valley billionaire, then Harryproa has the program for you!

OBJECTIVE: To enable people to compete in multihull offshore races at reasonable cost, with a very high chance of finishing and a good chance of winning the 40’/12m division. Bucket List costs $US50,000/40.000Euros, ready to sail. This…

 racing proas new designs

11 October 2014    0 comments

Ocean Rowing Multihulls

When sheer efficiency is required, it’s hard to beat a multihull. The trimaran configuration is gaining traction in open ocean rowing events and according to proponents, the tri has some considerable advantages over monohulls. Here are a few that have crossed the desk recently.

Samson

Samson is a two-position rowing machine designed to make the 3800 mile (6,116 km) Atlantic crossing from New York to Paris. The brainchild of…

 trimarans new designs human powered

08 October 2014    2 comments

James Wharram Designs Mana 24

James Wharram Designs has a new boat on the drawing board, a 24’ trailerable catamaran that slots nicely between the venerable Tiki 21 and 26. The Mana 24 features some new wrinkles in the Wharram design evolution spiral, most noticeably a chined hull. The new design also features a cat ketch rig, which is well known on trailerable monohulls, and it is interesting to see it employed on a cat. No jibs means no head stay tension, giving…

 new designs catamarans

01 October 2014    0 comments

Newick Tremolino Hot Rod

The Richard Newick designed Tremolino is one of our favorite designs: employing the hulls, rig and connective tubing from a Hobie 16 to create a small cruising trimaran - genius! This one is said to be a fiberglass factory trimaran by Tremolino Co., but using the larger and more powerful Hobie 18 hulls and rig. This example includes synthetic shrouds, asymmetric, bowsprit, outboard and trailer, and comes in the best color possible for…

 trimarans dock ranger

30 September 2014    0 comments

Slightly Dangerous Commuter

We’ve become very interested in lightweight, fuel-efficient power multihulls. Slightly Dangerous is a 26’ plywood commuter cat for the San Juan Islands, from Bieker Boats, built by the owners, Gordy and Judy Cole.

Slightly Dangerous is not a kit boat really, but all the plywood and foam parts were NC cut for easy assembly. The hulls are 9 and 6mm Okoume ply, finished off at the bow with a foam crash-box. The deck is 3” blue foam with…

 power just launched catamarans

21 September 2014    0 comments

The R2AK gold rush

One topic on everyone’s lips at the PT Wooden Boat Festival this year is the Race to Alaska, a sail/row/paddle race from PT to Ketchikan, AK sponsored by the Northwest Maritime Center, and promoted by our friends at Smallcraft Advisor. It’s a 750 mile “Aquatic Iditarod” with no rules except no engines allowed but muscle and wind. First prize is $10,000, and there is no second.

The start is set for June 4, 2015, which is a notoriously…

 racing

18 September 2014    5 comments

1980 sailing rocket w/ trailer

Seeing a Stiletto catamaran in 2014 always causes a “what the hell happened?” moment. The Stiletto was launched in 1975, the first (and possibly the last) production boat moulded in an autoclave of prepreg epoxy fiberglass/kevlar over a Nomex honeycomb core. This was aerospace tech for the middle class, and the multihull future looked bright indeed back in the 70’s. The styling was pure aerospace as well, and the boat stoked my teenage…

 history dock ranger catamarans

17 September 2014    1 comments

A Victorian Catamaran in San Francisco

This photo of a top hatted Victorian era gentleman sailing a catamaran named “Duster” by the San Francisco waterfront has recently come to the attention of the internet. After some initial uncertainty as to its vintage, the craft is now known to date from 1894, as in that year it participated in sailing regattas run at Sausalito, California by the San Francisco Yacht Club.

Unfortunately, beyond its name, not much more is known.…

 history catamarans