Dilys is a Welsh name and means “perfect, true and reliable” which is just right for this sturdy little ship—it also happens to be my wife’s name and the meaning certainly fits her too! This is a 4 plank per side ply on frame version of the well known North American Catboat—boats with a generous beam giving enormous stability and vast room inside for their length.
She has the standard layout for a catboat of this length of just 2 berths with comfortably sized wc compartment and galley and very large cockpit. She could of course, with some redesign, take 4 berths. Maximum headroom as drawn is 6’ (1.83m). The drawings give details for both an inboard diesel engine installation and an alternative outboard well.
Many had a centreboard rather than a fixed keel and she could also be adapted to take this arrangement. Construction is based on a modern pre-shaped egg-box type plywood framework of frames/bulkheads slotted together with fore and aft girders.
Dilys
25'8" Catboat Particulars |
| LOD |
25'8" |
7.82m |
| Beam |
12' |
3.65m |
| Draft |
4'2" |
1.27m |
| Sail
Area |
515
sq.ft |
47.88
sq.m |
| Displacement |
5.60
tons |
5.69
tonnes |
| Ballast |
1.82
tons |
1.85
tonnes |
| Maximum
Headroom |
6' |
1.83m |
| Accommodation |
2
berths with separate wc and L shaped galley plus chart
area |
| Engine |
25-35
hp inboard |
|
Hull
Shape |
Round
bilge (multi-chine) |
| Construction
Methods |
Multi-chine
ply over frames/bulkheads |
| Major
plywood requirements |
4mm
x 13 sheets
9mm x 46 sheets
12mm x 20 sheets
15mm x 3 sheets
18mm x 1 sheets |
| Guidance
Use |
Coastal/cross
channel |
| Drawing/Design
Package |
13
x A1 drawings + 7 x
A4 instruction/spec sheets |
| Additions
and alterations included with the plans |
|

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