A vessel's waterline length (L.W.L) is the length of a vessel or boat at the level where it sits in the water (= waterline). The LWL will be shorter than the length of the vessel overall (= LOA). As a vessel becomes more loaded, it will sit lower in the water, and its ambient waterline length may change; but the registered L.W.L is measured from a default load condition.

The speed of the ship has a non-linear relationship with fuel consumption; the ship going slower will have fewer air emissions than a ship going faster. The speed of the ship has an impact on both the design level and operational level.

To filter for vessel length and speed, select the specification of both on the FleetMon Explorer.

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