Sooty Tern
Description
The Sooty Tern is a 19'8" (6.0 m) double-ended clinker-ply sailing dinghy designed by Iain Oughtred as an enlarged development of his popular Arctic Tern faering-inspired beach boat line. It is a plans-based design sold through Oughtred Boats (and sometimes adapted or extended by other builders like Devlin Boat for related variants such as the Sooty Tern 25 gaff-rigged cruiser). Exact quantity built is not documented as a production class (hundreds of Oughtred small boats have been home- or professional-built worldwide since the 1980s–1990s, with the Sooty Tern being a popular choice among enthusiasts for its graceful lines and versatility), but numerous examples exist with active builder blogs, forum discussions, and sailing reports. Construction is typically clinker (lapstrake) plywood with epoxy, making it lightweight, strong, and relatively straightforward for skilled amateurs (Oughtred estimates around 600 hours for a similar build). Key features include a balanced lug yawl rig (or sometimes sloop variants), centerboard for shoal draft and trailering/beaching, excellent rowing performance when unrigged, and a roomy cockpit for daysailing or coastal cruising by 1–4 people. It is praised as a fast, stable, and beautiful open boat ideal for protected waters, gunkholing, or light overnighting—light enough (around 300–400 lbs hull/rigged) for car-topping or easy launching by a small group.
Construction Details
| Designer | Iain Oughtred |
|---|---|
| Builder | Home Built |
| Length | 19.667 ft |
| LOA | 19.667 ft |
| LWL | 16.183 ft |
| Beam | 5.350 ft |
| Displacement | 400 lb |
The standard boat dimensions
| i | - |
|---|---|
| j | - |
| p | - |
| e | - |
| p2 | - |
| e2 | - |
| i2 | - |
| j2 | - |
| I | J | P | E | P2 | E2 | I2 | J2 |
|---|---|---|---|---|---|---|---|
| - | - | - | - | - | - | - | - |
Documents
Sails
Sooty Tern - 4-SIDED SAIL
| Luff | 9.5 ft - (2896 mm) |
|---|---|
| Foot | 9.5 ft - (2896 mm) |
| Leech | 17.083 ft - (5207 mm) |
| Head | * 74.5 ft - (22708 mm) |
| Diagonal | 11.5 ft - (3505 mm) |
| Tack Angle | 10 ° |
| Area | * 99.02 ft² |
| Comments | The main is a balance lug sail. |
| Edit in Calculator |
Sooty Tern - LEG-O-MUTTON
| Luff | 8.33 ft - (2539 mm) |
|---|---|
| Foot | 4.167 ft - (1270 mm) |
| Leech | * 7.5 ft - (2286 mm) |
| Tack Angle | * 66.28 ° |
| Diag (clew/head) | 7.67 ft - (2338 mm) |
| Head (Inches) | * 3.5 |
| Area | * 16.79 ft² |
| Comments | This is the mizzen sail. |
| Edit in Calculator |
Disclaimer. Boats are not all the same -- even when produced in the same factory of the same model. Sailrite does its best to publish accurate dimensions, but we often find it worthwhile to have our customers measure their boats carefully before we produce kits for them. You should take the same precautions, especially when the data is not from Sailrite. The information on this site is not guaranteed to be accurate. Sailrite offers this content as a service to our community, but takes no responsibility for the reliability of the data provided.