Macgregor 21
| Length | |
| Hull Type | Swing Keel |
| Rigging Type | Fractional Sloop |
| LOA | 21.00' (6.40m) |
| S.A. | 194.00 sq ft (18.02 m2) |
| Beam | 6.67' (2.03m) |
| Displacement | 1500 lbs / 680 kgs |
| Ballast | 400 lbs / 181 kgs |
| Designer | Roger MacGregor |
| First Built | 1970 |
| Length | |
| Hull Type | Swing Keel |
| Rigging Type | Fractional Sloop |
| LOA | 21.00' (6.40m) |
| S.A. | 194.00 sq ft (18.02 m2) |
| Beam | 6.67' (2.03m) |
| Displacement | 1500 lbs / 680 kgs |
| Ballast | 400 lbs / 181 kgs |
| Designer | Roger MacGregor |
| First Built | 1970 |