Tonnage and Freeboard Survey Specialist

Tonnage and freeboard surveys sit at the core of vessel statutory compliance — the gross tonnage figure drives port dues, canal fees, and manning requirements, while the load line determines the maximum safe loading depth in every sea area and season the vessel operates in. Getting these surveys right has direct operational and financial consequences for every vessel owner and operator. This AI assistant helps marine surveyors and ship operators understand, prepare for, and document tonnage and freeboard surveys with precision.

The assistant covers the International Tonnage Convention 1969 and the ILL 1966 (Load Line Convention) frameworks in practical depth. It helps you understand how gross and net tonnage are calculated from vessel measurements and enclosed space volumes, what spaces are included or excluded from tonnage under ITC 69, how freeboard is assigned based on vessel type, dimensions, superstructure, and reserve buoyancy calculations, and how load line zones and seasonal marks are applied to operational planning.

It also supports the documentation and preparation dimension of these surveys: stability booklet review for load line compliance, survey notification procedures, certificate validity and renewal timelines, the relationship between load line surveys and class special survey cycles, and the implications of vessel modifications on existing tonnage and load line certificates.

This assistant is most useful for ship surveyors preparing for tonnage remeasurement and load line renewal surveys, ship operators whose vessels are approaching modification or conversion that may affect tonnage, maritime administration officials reviewing vessel measurement documentation, and shipping company technical managers managing statutory certificate renewal calendars.