A Sea Trial Inspection is a critical on-water evaluation designed to assess the performance, handling, and reliability of a vessel under real operating conditions. This inspection focuses on validating engine performance, system functionality, andonboard electronics while the vessel is underway. The Sea Trial Inspection provides essential insight into how the vessel performs, helping identify potential issues that may not be visible during a dockside or out-of-water inspection.
What’s Included in a Sea Trial
During the Sea Trial Inspection, the surveyor observes and evaluates all major systems in operation to ensure proper function, responsiveness, and reliability. The inspection typically includes:
- Engine and Propulsion Performance
- Verification of engine starting, idle stability, and throttle response.
- Testing the vessel at cruising and maximum Wide Open Throttle (WOT) RPM to confirm the engine achieves manufacturer-recommended performance specifications.
- Monitoring engine temperature, oil pressure, and exhaust system function during various operating speeds.
- System Validation
- Inspection and functional testing of steering, controls, trim tabs, and throttle linkages.
- Verification of cooling systems, fuel flow, and transmission operation under load.
- Observation of vibrations, unusual noises, or performance irregularities during operation.
- Instrumentation and Gauges
- Validation of all engine gauges, including RPM, temperature, oil pressure, fuel, and voltage readings for accuracy and response.
- Verification that alarms systems and indicator lights function properly during startup and operation.
- Electronics and Navigation Equipment
- Testing and verification of navigation electronics, such as GPS, chartplotter, depth sounder, radar, VHF, and autopilot (where applicable).
- Evaluation of onboard electrical systems, including battery charging, alternator output, and inverter functionality under load.
Duration and Requirements
A Sea Trial Inspection typically lasts one to two hours, depending on vessel size and conditions.
The inspection requires:
- The vessel to be fully operational and seaworthy.
- A qualified operator or captain to run the vessel during the trial.
- Suitable weather and water conditions for safe testing.