SEAKEEPER RIDE SEA TRIAL REPORT
Vessel Characteristics
| Boat Make | HCB Yachts |
| Boat Model | 4200 Siesta |
| Boat Year | 2013 |
| System | Seakeeper Ride 900 |
| Length Overall | 41 ft. 7 in. |
| Beam Overall | 12 ft. 2 in. |
| Engine Configuration | 4x Mercury 400 HP |
| Displacement | 24,000 lbs. |
Test Conditions
| Date | 9/30/2025 |
| Location | Key Largo, Florida |
| Average Speed (auto) | 36 mph |
| Average Speed (manual) | 36 mph |
| Seas | Stern Quartering |
| Sea Conditions | 3 ft. at 4 seconds |
Performance Results
37%
ROLL ELIMINATION
49%
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.
