At the entrance to Port Solent Marina the lock should only be approached if 3 green lights show. The principal deep-water navigational channels within the statutory limits of the Port of Portsmouth are well marked by buoys and lights. These channels are in constant use by commercial vessels, Royal Navy vessels and container ships, ferries and other traffic. When main channels have to be crossed, this should be done as nearly as practicable at right angles. Avoid crossing the bows of on-coming traffic.
Most recreational sailors take a justifiable pride in the responsible way they conduct themselves.
Part of this is a realisation that hindering passage of large commercial vessels is not only bad manners but dangerous to themselves, their crews and more particularly to the ship itself. Recreational users of the port area are particularly requested to remind themselves of and observe the Collision Regulations, Port of Portsmouth Bye-laws and Local Notice to Mariners. No underwater swimming or diving is permitted within Portsmouth Harbour northwards of the harbour entrance or elsewhere within 150 metres of any H.M. Ships. Water Skiing No Water-skiing is permitted within Portsmouth Harbour. Water-skiing is permitted within the Dockyard Port outside of Portsmouth Harbour outside half a mile from any shore.