THE SEACLIPPER SERIES

In an age of growing sophistication of multihull design and construction, Seaclipper represents a step in the other direction—toward simplicity and economy. We are convinced, after many years of building and sailing multihulls that economy doesn’t necessarily mean cheap, and simplicity doesn’t mean slow. Using basic construction techniques and materials, this design series embodies efficiency in all respects. Simple, robust, plywood construction has been mated to sensible sail plans, retractable centerboards or daggerboards, kick-up rudders, and slender hull-forms. These boats perform very well on the water. The no-frills, straightforward design philosophy is evident in each design. Our aim was to give the builder the best bang for the buck.

Construction of Seaclipper hulls are simple and conventional. Most bulkheads are plywood with or without lumber framing. Full-size bulkhead patterns are provided for all designs. The smaller boats use stitch-and-glue panel method assembly while the larger designs erect bulkheads on a ladder-frame strongback for planking. Stringers typically are level with waterlines with notch positions shown on the patterns. They also form the attachment for interior surfaces, such as, floors, counters, and seats. All designs have a narrow flat bottom with only two chines to simplify construction. The larger boats have a rounded, diagonally planked, thick bottom for extra strength. This bottom configuration makes it simple to attach centerboard or daggerboard trunks without resorting to difficult woodwork. The plans show clearly how planking is applied and the arrangement of all the pieces. Details of all the joints are provided on first-class plans that are easy to follow.

Various types of akas (crossbeams) are used depending on the type of craft. The Seaclipper 10, for instance, uses aluminum pipe, with bolted connections for easy demounting, although at only 8′ wide, the boat can be trailered fully assembled. The Seaclipper 13, 16, 20, 24, and 28 are swing-wing designs for easy trailering. This feature allows for quick launching from the trailer and moorage in a slip with or without the mast up. The Seaclipper 34 has demountable beams, with bolted connections.This boat is intended for seasonal transport and assembly will take a few hours. Both the Seaclipper 38 and 41 are fixed aka vessels and land transport is performed at full beam; although individual hulls can be built at a remote site and transported to the launch site for final connection. These larger designs are intended for trans-ocean service and have wave-cutting aka fairings to suit rough waters.

Rigging plans for all the Seaclippers will provide high performance potential. The SC10 has a one-design, bendy mast sail plan with optional spinnaker. This boat is easy to sail for the beginner, but challenging for knowledgeable racing sailors. It teaches growth in sailing expertise and boat handling techniques. The SC 13 and SC 16 share many of the features of the SC10 with the bonus of an extra seat for crew or student. All three of these boats have sit-in cockpits with pedal steering. The SC 20 and 24 both use beach cat rigs, obtained from popular boats that have large inventories of used equipment available, at very low prices. The SC 28 through 41 show simple sail plans with two forward stays to carry sails. While strictly not cutter rigs, the heavy weather sails can stay on deck in the inner stay for easy deployment. The boats are sailed as sloops, one headsail at a time, but the heavy weather sails are closer to the mast for better balance in the reefed condition. Attention was given to reduce the sail inventory (cost) while sailing efficiently in all wind strengths. Spinnakers, or other lightweight off-the-wind sails, are optional. In short, each design can be outfitted to meet the requirements of the builder, while reserving options to add more sails.

The working drawings (plans) feature detailed descriptions for all parts of the boat. Complex assemblies are shown in pictorial views for better understanding of the construction arrangements. Standard wood sizes, available at most lumber yards, are used throughout. Full-size patterns for all bulkheads, chainplates, and other difficult parts are provided to speed construction and ensure fair hulls. Booklets such as Standard Details, Notes on Correct Rigging,Liquid Joinery, and others are provided to explain methods used in construction. It is recommended that the builder obtain a copy of Searunner Construction by Jim Brown from outrigmedia.com, as an adjunct to the plans. The design fee (plans cost) includes consultation with the designer or agent during construction.

 

SEACLIPPER TRIMARAN SPECIFICATIONS

10 13 16 20 24 28 34 38 41
Length overall 10'0″ 13'2″ 15'11″ 20'0″ 24'0″ 28'5″ 34'5″ 38'3″ 41'6″
Waterline length 10'0″ 13'2″ 15'6″ 18'9″ 22'5″ 25'4″ 31'10″ 35'10″ 39'0″
Beam of main hull 2'3″ 2'5″ 2'5″ 2'11″ 4'1″ 5'3″ 6'7″ 7'8″ 8'3″
Extreme beam, outside the rubrails 8'0″ 9'7″ 11'3″ 14'0″ 16'0″ 18'6″ 23'4″ 25'6″ 27'6″
Draft, hull only 10″ 11″ 11″ 1'1″ 1'1″ 1'7″ 2'3″ 2'8″ 2'8″
Draft, centerboard down 2'11″ 2'6″ 2'7″ 3'5″ 3'5″ 5'0″ 5'0″ 6'0″ 6'0″
Displacement, full load (in lbs.) 360 600 800 1,600 2,400 2,650 7,600 11,000 12,500
Displacement, dry 160 300 400 800 1,400 1,900 5,600 8,000 9,000
Payload 200 300 400 800 1,000 750 1,600 3,000 3,500
Sail area, Main (sq ft) 60 79 127 150 175 166 290 320 400
Sail area, max (main and genoa) 60 79 127 202 275 371 616 770 950
Mast length 18'6″ 21'0″ 25'6″ 27'3″ 29'0″ 32'0″ 40'0″ 46'6″ 50'6″
Bridge clearance 20'0″ 21'0″ 25'0″ 23'0″ 35'0″ 36'0″ 45'0″ 51'0″ 56'0″
Engine, maximum horsepower N/A N/A N/A 5 OB 6 OB 6 OB 15 20 30
Engine, standard tankage (gallons) N/A N/A N/A 3-6 3-6 3-6 10 30 40
Standard water tankage (gallons) N/A N/A N/A N/A N/A 10 20 50 50
Cruising speed under power (knots) N/A N/A N/A 6 6 6 7 8 9
Crew, min-max 1 1-2 2-6 2-6 2-6 2 2 3 3
Berths, min-max N/A N/A N/A 2 2 2-3 2-5 2-5 2-5
Headroom N/A N/A N/A N/A 5'5″ 5'2″ 6'0″ 6'6″ 6'3″
Study Plans (2015) $10 $15 $15 $20 $20 $20 $20 $20 $20
Design Fee (2015) $100 $140 $180 $300 $500 $700 $900 $1,100 $1,400
Shipping in USA (2015) $5 $5 $5 $10 $10 $10 $10 $10 $10
Shipping International (2015) $10 $10 $10 $15 $15 $15 $15 $15 $15