WHAM is a voluntary organisation working on behalf of its members in negotiation with the Crown Estate, the Scottish Executive, and the Royal Yachting Association to protect west coast harbours and anchorages. Present supporting organisations include:

Achintore M.A.
Achnacree M.A.
Achnamara M.A.
Airds Bay M.A.
Ardentallen M.A.
Ardfern Yacht Centre
Ardoran Marine
Argyll Charter Boats Association
Assoc. of Scottish Yacht Charterers
Badachro M.A.
Balvicar Boatyard
Balvicar Bay M.A.
Camus an t'Salainn M.A.
Cardingmill Bay M.O.A.
Campbeltown S. C.
Castle Sween M.A.
Clyde Cruising Club
Craobh Haven Marina
Creran Moorings
Craignish Lagoon M.A.
Crinan Harbour Assoc.
Crinan Boats
Dunbeg Boat Owners Assoc.
Dunstaffnage Bay M.O.A.
Dunstaffnage Marina
Glencoe Boat Club
Kentallen Bay M.A.
Kilmelford Yacht Haven
Learagoligan M.H.A.
Loch Aline M.A.
Lochcarron M.A.
Luing Mooring Association
Melfort Pier & Harbour
Mid Kerrera M.A.
Oban Port Users Ltd.
Oban Sailing Club
Oban Yachts & Marine Services Ltd.
Ocean Youth Trust
Portree M.A.
Roshven M.A.
Royal Highland Yacht Club
Salen Bay M.A.
Scottish Yachtmaster Instructors Assoc.
Seil Sound M.A.
Shieldaig M.A.
Sleat Marine Services
Sound of Ulva M.A.
South Shian M.A.
Stein M.A.
Sunart M.A.
Tarbert M. & B.H.A.
Tayvallich M.O.A.
Tobermory Harbour & Fairways A.
West Connel M.O.A.
West Loch Tarbert M.A.