SEAKEEPER RIDE SEA TRIAL REPORT
Vessel Characteristics
| Boat Make | Spencer Yachts |
| Boat Model | 59 |
| Boat Year | 2004 |
| System | Seakeeper Ride 1500 |
| Length Overall | 59 ft. 0 in. |
| Beam Overall | 18 ft. 0 in. |
| Engine Configuration | 2x Other 1550 HP |
| Displacement | 65,000 lbs. |
Test Conditions
| Date | 1/23/2026 |
| Location | Stuart, Florida |
| Average Speed (auto) | 42 mph |
| Average Speed (manual) | 42 mph |
| Seas | Beam Seas |
| Sea Conditions | 3 ft. at 6 sec |
Performance Results
51%
ROLL ELIMINATION
43%
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.
