Following along the same lines as her smaller sister, this cruiser is an ultra simple boat with plenty of space and performance for her size. She has room for 3 or 4 berths plus galley and portable wc. Construction simply involves fixing pre-shaped side panels to ply frames, adding chine and gunwale stringers on the outside and then applying a double thickness of ply to the bottom. Other pre-shaped pieces are then added before fixing a ply ballast box filled with scrap iron and cement. Centreboard or bilge keels may be fitted and she has 4 berths, space for a galley and wc and a handy gunter rig. She is simple but immensely strong and efficient. 
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Simplicity 20' Particulars |
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| LOD | 20' | 6.1m |
| Beam | 7'8" | 2.34m |
| Draft | 2'/3'8" | 0.61/1.12m |
| Sail Area | 206 sq.ft | 19.16 sq.m |
| Displacement | 3750 lbs | 1700 kg |
| Ballast | 1600 lbs | 726 kg |
| Maximum Headroom | 5'3" | 1.6m |
| Accommodation | 3-4 berths plus galley and wc area | |
| Engine | 5-7 hp outboard | |
| Hull Shape | Flat bottom single chine | |
| Construction Methods | Ply over frame and stitch and tape | |
| Major plywood requirements | 4x 6mm sheets 25 x 9mm sheets 1 x 12mm sheet 3 x 24mm sheets |
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| Guidance Use | Estuary/coastal | |
| Drawing/Design Package | 4 x A1 drawings + 10 x A4 instruction/spec sheets | |
| Additions and alterations included with the plans | ||
