Length Overall (LOA)

The total length of a vessel measured from the foremost point of the bow to the aftmost point of the stern, including any fixed projections.

Length Overall (LOA) is a measurement in the marine industry, as it defines the maximum length of a vessel from end to end. This measurement includes any permanent fixtures such as bowsprits, swim platforms, or rudders that extend beyond the hull. LOA is used for various purposes, including determining docking fees, marina space requirements, and compliance with specific regulations. It is important to note that LOA does not necessarily correspond to the vessel’s waterline length, which is the length of the boat that is in contact with the water. LOA is always the longest dimension of the vessel, regardless of whether certain parts of the boat are above or below the waterline. 

Understanding LOA is essential when purchasing or registering a boat, as it affects the classification of the vessel, insurance premiums, and even the type of licence required to operate it. It also plays a role in determining the vessel’s capacity and stability, as the overall length can influence how the boat behaves in different sea conditions. For instance, a longer LOA may provide a smoother ride in rough waters, but it could also make the vessel more challenging to manoeuvre in tight spaces. Therefore, LOA is a fundamental specification for both boat owners and marine professionals alike.