O'Day 12
Description
Measurements from an existing sail, Sailrite measured a customer's sail we had in the loft for repairs. The O'Day 12, a compact American-built cat-rigged daysailer designed by Robert H. Baker and produced from 1976 to 1979 by O'Day Corp. in Fall River, Massachusetts, features a simple, unstayed single-mast rig optimized for easy setup and beginner-friendly handling on protected waters, sharing its hull with the sloop-rigged Widgeon 12 but adapted with a daggerboard, modified seating, and a sleeved mainsail for a total reported sail area of 75 square feet without a jib or headsail. The rig consists of a lightweight three-piece aluminum mast (total length 21 feet 4 inches, height above waterline approximately 21 feet 7 inches from design waterline) stepped in a tabernacle for quick raising/lowering, paired with an 8-foot 8-inch aluminum boom, where the mainsail luffs into a full-length mast sleeve (no track or slides required).
Construction Details
| Designer | Robert H. Baker |
|---|---|
| Builder | O'Day Corp. |
| Length | 12.000 ft |
| LOA | 12.330 ft |
| LWL | 11.500 ft |
| Beam | 5.000 ft |
| Displacement | 243 lb |
| Max Draft | 3.500 ft |
| Min Draft | 0.420 ft |
The standard boat dimensions
| i | - |
|---|---|
| j | - |
| p | 17.50 ft |
| e | 8.17 ft |
| p2 | - |
| e2 | - |
| i2 | - |
| j2 | - |
| I | J | P | E | P2 | E2 | I2 | J2 |
|---|---|---|---|---|---|---|---|
| - | - | 17.50 ft | 8.17 ft | - | - | - | - |
Documents
Sails
O'Day 12 - MAINSAIL
| Luff | * 17.5 ft - (5334 mm) |
|---|---|
| Foot | * 8.17 ft - (2490 mm) |
| Leech | * 18.89 ft - (5758 mm) |
| Tack Angle | * 88 ° |
| Diagonal | * 19.05 ft - (5806 mm) |
| Head (inches) | * 4.5 in - (114 mm) |
| Area | * 74.646 ft² |
| Comments | There is a sleeve at the luff (7 inches wide at the head and 9 inches wide at the tack when folded flat) into which the mast is inserted. The foot of the sail is loose. |
| 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.