Overview
ISO 19019:2005 - "Sea‑going vessels and marine technology - Instructions for planning, carrying out and reporting sea trials" provides authoritative guidance for the planning, execution and reporting of sea trials for mechanically propelled ships (excluding submarines). It helps shipbuilders, ship owners, designers and trial crews achieve a unified, contract‑aligned approach to propulsion, manoeuvring, endurance, vibration and noise tests and other sea trials.
Key Topics
- Scope & applicability: Guidance applies to most mechanically propelled vessels; submarines are excluded. Annex B identifies vessel types and recommended trials.
- Responsibilities: The shipbuilder is responsible for planning, conducting and evaluating sea trials; trials may be delegated to competent institutions as agreed with the owner.
- Planning & safety: Checklist items include permits, insurance, provision of qualified personnel, shipboard safety equipment, dock trials, inclining/stability verification and pre‑trial and final meetings.
- Trial types:
- Propulsion trials (speed, fuel consumption, endurance, astern)
- Control system trials (steering gear, thrusters, fin stabilizers)
- Manoeuvring trials (turning, zig‑zag, stopping, etc.)
- Miscellaneous tests (anchor‑handling, structural vibration, noise level)
- Instrumentation & data: Instruments must be calibrated and traceable to international measurement standards. Continuous data recording is recommended (example sampling noted at 1 Hz for speed trials) and an uncertainty analysis should be performed.
- Reporting & acceptance: A formal trials report with data sheets and acceptance criteria is required (see Annex A). Reports must be signed by participants; originals are retained by the shipbuilder and copies provided to the owner and classification society.
Applications
ISO 19019:2005 is used by:
- Shipbuilders to plan and document compliance testing before delivery.
- Ship owners / operators to verify contractual performance (speed, fuel economy, manoeuvrability, endurance).
- Naval architects and designers to confirm that delivered performance matches design and model test results.
- Classification societies and flag authorities as a reference for trial procedures and reporting.
Practical benefits include standardized trial sequences, improved safety and traceable, defensible test results for commercial acceptance and handover.
Related Standards
Relevant referenced documents include:
- ISO 2923 (noise measurement on board vessels)
- ISO 3046 (engine performance)
- ISO 4867 / ISO 4868 / ISO 6954 (vibration measurement and reporting)
- ISO 15016 (speed and power performance assessment)
- SOLAS (stability and safety requirements)
These related standards support accurate measurement, calibration and acceptance criteria during sea trials.
Keywords: ISO 19019:2005, sea trials, shipbuilders, ship owners, propulsion trials, manoeuvring trials, vibration tests, noise level tests, trials report, calibration, endurance, speed trials.