SEAKEEPER RIDE SEA TRIAL REPORT
Vessel Characteristics
| Boat Make | Grady-White Boats |
| Boat Model | Express 340 |
| Boat Year | 2027 |
| System | Seakeeper Ride 750 Quad |
| Length Overall | 33 ft. 6 in. |
| Beam Overall | 11 ft. 87 in. |
| Engine Configuration | 3x Yamaha 350 HP |
| Displacement | 12,870 lbs. |
Test Conditions
| Date | 11/9/2026 |
| Location | Placida, Florida |
| Average Speed (auto) | 41 mph |
| Average Speed (manual) | 41 mph |
| Seas | Beam Seas |
| Sea Conditions | 2 ft at 4 sec |
Performance Results
35%
ROLL ELIMINATION
59%
Pitch ELIMINATION
Roll Rate Comparison
Pitch Rate Comparison
Performance results are measured with the system on and off as a reduction of standard
deviation in pitch and roll rates at all frequencies at a constant heading and speed.
