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Hallberg Rassy 40 Hamble

Hallberg Rassy Marine Survey

A Hallberg Rassy 40 in the water at Hamble Point Marina, Hamble for a Tonnage Measurement Survey for British Registration. The tonnage measurement is fairly straightforward, accurately measuring the length overall excluding bow rollers and other overhangs, the max beam excluding rubbing strips, and then the depth at half length. The depth measurement is less straightforward, requiring the tonnage measurer to estimate the centreline height at deck level excluding the coachroof, thus estimating the deck camber and measuring to the upper side of the keel, or bilge if a keel sump exists. The resulting measurement gives an idea of the volume, or tonnage, of the interior, for holding cargo such as wheat, wine or beer!