Many repairs, refits, upgrades, modifications, and conversions that historically were only done in dry dock at a shipyard are now being completed by vessels in service and under way.

This is particularly true with respect to many new international requirements such as exhaust scrubbers, alternate fuel (ECA), and ballastwater treatment, etc.

The timetable for implementation of these new requirements quite often is in advance of a ship’s normal drydock schedule. At the same time, all structural modifications, even temporary, require classification or regulatory approval prior to the work being initiated.

Documentation including plans and drawings are the first steps towards a safe and approved vessel modification.