Small Catamaran Dayboats

Home
Dayboat Highlanders
Dayboat Skylarks
Dayboat Double Enders
Other Dayboats
Small Catamaran Dayboats

DAYBOAT DESIGNS & PLANS
SMALL CATAMARAN DAYBOATS

Back to Dayboats Main Page

We have 3 designs for simple plywood catamarans below 16' length

Note - In the particulars for each design, the dry weight is given for guidance only and will vary depending on the grade/density of plywood and solid wood used - different thicknesses of ply are often used by builders and the dry weight figure is based on the thinnest ply specified.
Also the Guidance Use comments are given in good faith and are based on feedback from previous builders etc and based on standard weight adults - contact us if you want further clarification before ordering/building.
E & OE

ORDERING PLANS

For each design you can order either:

PRINTED PLANS sent to you by post - Postage will be added to your order - see postage costs at the bottom of the page

PDF PLANS sent to your email address - make sure we have your email address when you order.

Catamarans on this Page
16' Simple Surf	18' Hawk	5m Rodcat

Also see the details for the Docat Beach catamaran based on the 14' Exe Dory at the bottom of the page

16' SIMPLE SURF CAT

Surf Cat

16’x 7’. Very simple construction based upon 7 sheets of ply and easy ‘V’ section hulls with no centreboards. Costs have been kept right down by using wood beams and a simple ply aerofoil section mast. Definitely a sporty fun boat for the beach and for some competitive single handed sailing. A poor man’s Hobie cat. Easily demountable with everything secured by bolts minimal construction time.

Right is an example by Martin Chaplin.

16' Simple Surf Cat Particulars

LOA 16' 4.88m

OA Beam 7' 2.13m

Hull beam 13" 0.33m

Hull Mid Depth 1' 9 1/4" 0.54m

Draft (hull excl. rudder) 5" 0.13m

Sail Area 115.5 sq.ft 10.74 sq.m

Approx. Dry Weight 221 lbs 100 kg

Hull Shape
Simple V

Construction Methods Ply over frame and stitch and tape

Major plywood requirements for hull 6 1/2 sheets of 6mm and 1 sheet of 9mm plywood

Guidance Use 2-3 adults

Drawing/Design Package 2 x A1 drawings + 4 x A4 instruction sheets

Additions and alterations included with the plans

ORDER THE 16' SIMPLE SURF CAT PLANS

(Approx. 72 Euros/$81 USD)

18' HAWK

18’x 11’ (hull beam 3’). Ultra simple stitch and tape construction using 10 sheets of 1/4’’ and 4 sheets of 3/8’’ ply. Built-in buoyancy, good storage and sit-in hulls which may, under a canvas canopy be used for sleeping as well as the bridge deck area making her an ideal coastal/beach camping boat. Beams are simply bolted to the hulls and each hull may be made in two parts and bolted together.

The plans show details for a fixed low aspect ratio keel as an alternative to the daggerboards.

A Hawk being built in the Philippines by David Blowers

Right and below are photos of an example of the Hawk by Yaraslav Pidkurganniy in the Ukraine.

18' Hawk Particulars

LOA 18' 5.49m

OA Beam 11' 3.36m

Hull beam 3'2" 0.97m

Hull Mid Depth 2'4" 0.71m

Draft 8"/2'8" 0.2/0.81m

Sail Area 135 sq.ft 12.56 sq.m

Approx. Dry Weight 386 lbs 175 kg

Hull Shape
Flat bottom single chine

Construction Methods Stitch and tape

Major plywood requirements for hull 10 sheets of 6mm and 4 sheets of 9mm plywood

Guidance Use 4 adults +

Drawing/Design Package 3 x A1 drawings + 7 x A4 instruction sheets

Additions and alterations included with the plans Alternative low aspect ratio fixed keel and vertical transom

ORDER THE 18' HAWK PLANS

(Approx. 78 Euros/$88 USD)

5m RODCAT BEACH CATAMARAN

The Rodcat 5 is a simple beach catamaran with asymmetric hulls. To make construction quick and easy, each hull is built up from a flat inboard side which is laid flat on a workbench. The transom and ply bulkheads are then fitted to this side and the pre-shaped bilge and side panels added and stitched together. All seams are then epoxy filleted before the deck is put on over size and trimmed back. The 'I' beams are made up from wood and are simply lashed into beam slots mounted on top of the deck so that assembly is quick. The daggerboards are mounted in outboard slots formed on the vertical inboard hull sides and the drawings give details for wood mast and boom. LOD 18' (5.5m); Beam OA 9'2" (2.8m); Sail Area 178 sq.ft. (16.6m); Approx. wht. 350 lbs (160 kg).

5m Rodcat Beach Catamaran Particulars

LOA 18' 5.5m

OA Beam 9'2" 2.8m

Hull beam 1'8" 0.5m

Hull Mid Depth 2' 0.61m

Draft 7"/2'9" 0.17/0.84

Sail Area 178 sq.ft 16.6 sq.m

Approx. Dry Weight 350 lbs 160 kg

Hull Shape
Asymmetric V bottom

Construction Methods Stitch and tape

Major plywood requirements for hull 7 sheets of 6mm plus 6 sheets of 9mm plywood

Guidance Use 2-4 adults

Drawing/Design Package 4 x A1 drawings + 5 x A4 instruction sheets

Additions and alterations included with the plans

ORDER THE 5m BEACH CATAMARAN PLANS

(Approx. 90 Euros/$101 USD)

Two14' Exe Dory scan be made up as a Beach Catamaran - the Docat - view on the Sharpie, Dory page.

Back to Dayboats Main Page

Post & Packing Charges when Ordering Printed Dayboat Plans

The postal charges on individual items are:

UK - £5

EU/Europe - £11

USA - £18

Elsewhere - £18

All posted items are usually sent by Royal Mail International Tracked Service.
The Post and Packing charges for orders which include more than one item are combined to give a lower P&P charge than if the items are charged separately.
Note - if you wish to order both Printed and PDF (emailed) items, these orders are handled separately on different secure payment systems.

FOR DETAILS OF THE STITCH & TAPE
AND CEDAR STRIP PLANK
CONSTRUCTION METHODS SEE THE HOME PAGE