Seidelmann 300
| Length | |
| Hull Type | Fin w/ Rudder on Transom |
| Rigging Type | Masthead Sloop |
| LOA | 30.00' (9.14m) |
| S.A. | 430.00 sq ft (39.95 m2) |
| Beam | 10.00' (3.05m) |
| Displacement | 9500 lbs / 4309 kgs |
| Ballast | 4500 lbs / 2041 kgs |
| Designer | Bill Seidelmann |
| First Built | 1985 |