The Queens Harbour master is in control of all diving in the sound and you should inform Him via Longroom if you intend to dive there or the breakwater but I think its a formality and if you stay close in not getting in anyones way you should be fine . Ive see a spearo there regularly on the north side in the shallows but never on the south which is where i was .
occasionally the MOD plod will ask you to move if a ship is coming in. the main concern is the tidal stream which can get up to 6 kts so pick a slack time or have a chase boat ready.
occasionally the MOD plod will ask you to move if a ship is coming in. the main concern is the tidal stream which can get up to 6 kts so pick a slack time or have a chase boat ready.