'CP' (ii) was a British naval undertaking to sink blockships in the entrance to the harbour of Dieppe on the north-eastern coast of France and thereby deny the Germans the opportunity to use the harbour until the obstructions had been cleared (10/11 June 1940).

The undertaking involved the destroyer Vega and three blockships (1,262-ton Jacobus, 2,420-ton Kaupo and 1,525-ton River Tyne), which departed Portsmouth for the task. After completion of the 'CP' (ii) undertaking, Vega was used to provide support for the evacuation of British personnel from Le Havre.