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SEA-15

$130.00$300.00

SEA-15 kayak: Designed for the smaller paddler.  Designed by the retired architect and long time paddler, Jonathan Rose, this kayak is made for rough water play and touring.

The SEA-15 is designed for paddlers between 120 to 140 pounds (54 – 64 kg).  Figure assume dressed paddlers, with cargo and a boat weight of 35 lbs (16 kg).

It is offered either as plans or pre-cut forms for home builders.  It can be also be custom built by CSCWC.

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Description

SEA-15 kayak: Designed for the smaller paddler.  Designed by the retired architect and long time paddler, Jonathan Rose, this kayak is made for rough water play and touring.

The SEA-15 is designed for paddlers between 120 to 140 pounds (54 – 64 kg).  Figure assume dressed paddlers, with cargo and a boat weight of 35 lbs (16 kg).

From the designer, Jonathan Rose:

Due to being a smaller paddler, I have spent many hours researching and trying lower volume kayaks. And I have owned two of the best: the Impex Mystic, an early plastic one now out of production, and the Mariner Elan. The Mystic lacked speed and the Elan, also no longer made, required a sea sock and float bags, a little problematic to handle, at least for me.

Consequently, about two years ago, I began to think about a rough water sea kayak for my weight. I wanted a hull that would sit in the water right at the design water line and not be riding high, or out of trim bow high, which is sometimes the case. I also did not want too narrow a kayak but one that would be comfortable in challenging conditions if need be.

I very naturally turned to Dan Caouette who owns Clear Stream Custom Water Craft for help and guidance. Dan had already built a modified Bjorn Thomasson Njord for me to use in ocean racing. Beyond being a very talented builder, Dan has a vast knowledge of kayak design and the ability to do the drawings including all the calculations and necessary modifications.

The SEA 15 is the result of this collaboration.

It is offered either as plans or pre-cut forms for home builders.  It can be also be custom built by CSCWC.

Hydrostatics

Design SEA 15
Designer Jonathan Rose / CSCWC
Length 15.26 ft 465.1 cm
Beam 21.74 in 55.2 cm
Waterline Length (LWL) 13.73 ft 418.40 cm
Waterline Beam (BWL) 20.7 in 52.7 cm
Design Displacement 175.00 lb 79.5 kg
Draft 3.17 in 8.0 cm
Wetted Surface Area 16.84 sf 1.56 sqm
Surface Area, Total 45 sf 4.17 sqm
Approx Boat Weight 29.91 lb 13.59 kg
Volume 2.71 cf 76.7 cu m
LCB (Longitudinal Center of Buoyancy) 8.44 ft 257.1 cm
LCB (Longitudinal Center of Buoyancy) 0.553 % 0.6 %
VCB (Vertical Center of Buoyancy) 0.16 ft 4.8 cm
LWL / BWL 7.94 7.939
Cb (Block) 0.38 0.3752
Cp (Prismatic) 0.5089 0.5089
Trans. Metacentric Height 1.02 ft 31.0896 cm
Resistance at 3 Knots 1.53 lbf 6.85746  N
Resistance at 5 Knots 6.06 lbf 27.1609  N

Design Statement

Design elements include a moderately swede form hull with the widest part of the kayak at the back of the seat. This is also the flatter section of the hull with more evident chine to provide initial comfort and solid secondary stability. The performance goal here is to enable confident leaned and sweep turns in wind and waves.

The hull from cockpit to bow is rounded. This, combined with some use of the adjustable skeg, allows for good downwind runs without broaching or plowing through waves.

There is a fair amount of rocker for maneuverability.  Despite this rocker, the kayak is generally low volume especially in the stern.

Finally, the kayak is designed to have a reasonable amount of speed in the hands of a fit paddler. It is designed for good glide and the small amount of wetted surface in the water reduces drag.

Plans For Home Builders

Plans are available for internal and external strong backs. They include 10 full-size sheets with full templates for all molds (not nested!), end stems, bulkheads and cockpit.  Full hydrostatics and resistance calculations available.

Purchasing these plans entitles you to build one boat only for your own personal use.  If you are interested in building more than one boat from the same plans a modest fee is required for each new boat.  Please inquire concerning any commercial interests.

Distribution of these plans in any form is expressly prohibited.

Strip Kit – Forms Only

Forms are available for internal and external strong backs (depending on the design).  They are precision cut on either particle board or MDF.   We do not sell electronic versions of our plans. They are full templates for all molds, end stems, bulkheads and cockpit.  You will need to supply the strong back and strips.

Purchasing these forms entitles you to build one boat only for your own personal use.  If you are interested in building more than one boat from the same plans a modest fee is required for each new boat.  Please inquire concerning any commercial interests.

Distribution of these plans/forms in any form is expressly prohibited.

Ordering A Custom Kayak

Custom kayaks can either be painted or clear coated. See the Clear Coated – Strip and Painted – Strip pages for more information and full pricing. The listed price is for a basic sea kayak.  Many options can be built into your kayak making a unique kayak.

Building only custom boats allows us to build YOUR boat for the way YOU paddle. Every boat is fully outfitted to the customer’s tastes and preferences. We take pride in the fact we offer a large variety of options. Our list of options, including custom wood and shell inlays, is unparalleled.  See our Options page for a small sampling.  If you can dream it we can probably make it real.

It generally takes 8-12 weeks to built a wood strip kayak.

You can place your deposit here if you wish.

Additional information

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High performance kayaks, canoes and other small boats. Crafted individually in the USA.