Question to the Department for Transport:

To ask the Secretary of State for Transport, what the (a) number and (b) gross tonnage was of (i) non-UK owned and (ii) non-UK registered offshore supply vessels operating on the UK Continental Shelf in each year since 2000-01.

The Maritime and Coastguard Agency collates a record of vessels registered on the United Kingdom Ship Register (UKSR). It does not hold a record of shipping on the registers of other national administrations, which could include UK owned vessels.

As of 9 June there were 159 offshore vessels on the UKSR, totalling 556,975 gross tonnage. No historical record is held with the kind of breakdown requested for previous years.

Neither is a record held of where ships operate, and hence the vessels mentioned above may be operating worldwide, not just on the UK Continental Shelf.