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Engine Power Declaration for Vessels

Engine Power for Boats

LB
Luca BosazziSeptember 25, 2026 · 2 min read
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Engine Power Declaration for Vessels
Engine Power Declaration for Vessels

Introduction

The Engine Power Declaration is an essential document in the context of selling a used vessel. This document establishes the maximum power of the engine that can be legally installed on a boat, ensuring that the structural and design limits of the vessel are not exceeded.

Importance of the Engine Power Declaration

Within the regulations concerning vessels, the Engine Power Declaration serves to certify that the engine's performance is adequate and safe for the type of vessel to which it applies. It is a crucial element for maritime safety, as an oversized or undersized engine can compromise the stability and manoeuvrability of the vessel.

Technical Details of the Declaration

This document should provide the following information:

  • The maximum allowed power for the engine, expressed in kilowatts (kW) or horsepower (HP).
  • The type of engine for which the vessel was designed (e.g., outboard, inboard, electric, etc.).
  • The vessel's compliance with applicable regulations regarding engine power, including local and international regulations.

Relevance for the Sale of Used Vessels

During the sales process, the Engine Power Declaration must be presented to buyers to demonstrate that the installed engine is appropriate for the vessel. This document is particularly important if the owner has made modifications to the original propulsion system or has installed a replacement engine.

Procedures for Obtaining and Updating

If the original Engine Power Declaration is not available or if significant modifications have been made to the engine or vessel, the owner must request an updated document. A technical inspection by a qualified marine surveyor or an authorised certifying body may then be required.

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