RIVER HAMBLE - REGULATIONS Anchoring is not permitted between Number 1 light beacon (50°50'·34N 1°18'·64W) and the M27 bridge (50°53'·33N 1°17'·70W). Net fishing and shellfish dredging are permitted only with the written authority of the Harbour Master. Water skiing is prohibited within the harbour limits. A maximum speed limit of 6 knots is in force within the harbour limits; for further details see Admiralty Sailing Directions.