SEAKEEPER RIDE SEA TRIAL REPORT
Vessel Characteristics
| Boat Make | Yellowfin |
| Boat Model | 39 Offshore |
| Boat Year | 2026 |
| System | Seakeeper Ride 750 Quad |
| Length Overall | 39 ft. 8 in. |
| Beam Overall | 11 ft. 6 in. |
| Engine Configuration | 4x Mercury 425 HP |
| Displacement | 13,000 lbs. |
Test Conditions
| Date | 7/23/2025 |
| Location | Sarasota |
| Average Speed (auto) | 49 mph |
| Average Speed (manual) | 49 mph |
| Seas | Bow Quartering |
| Sea Conditions | 1 ft. at 5 seconds |
Performance Results
40%
ROLL ELIMINATION
36%
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.
