SEAKEEPER RIDE SEA TRIAL REPORT

Vessel Characteristics
| Boat Make | Grady-White |
| Boat Model | 281 CE |
| Boat Year | 2026 |
| System | Seakeeper Ride 525 |
| Length Overall | 27 ft. 7 in. |
| Beam Overall | 9 ft. 4 in. |
| Engine Configuration | 2x Yamaha 300 HP |
| Displacement | 5,650 lbs. |
Test Conditions
| Date | 7/1/2025 |
| Location | Charleston |
| Average Speed (auto) | 26 mph |
| Average Speed (manual) | 26 mph |
| Seas | Bow Quartering |
| Sea Conditions | 3 ft at 5 seconds |
Performance Results
32%
ROLL ELIMINATION
41%
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.

