The Western Division consists of eighteen clubs based in Portsmouth Harbour:
- Army Sailing Association is open to military personnel only
- Cold Harbour Mooring Association
- Fareham Sailing & Motor Boat Club as based at the north west point of the harbour.
- Gosport Cruising Club is based near the mouth of the harbour on the western side.
- Hardway Angling Club
- Hardway Sailing Club is based roughly half way along the western side of the harbour.
- Hornet Sailing Club is based near the mouth of the harbour on the western side.
- Lee-on-the-Solent Sailing Club is based west of the harbour entrance.
- Portchester Sailing Club is based at the north east point of the harbour.
- Portsmouth Harbour Cruising Club is based roughly half way along the eastern side of the harbour.
- Portsmouth Offshore Group (CSSC/CSSA) is based near the mouth of the harbour on the western side.
- Portsmouth Sailing Club is based near the mouth of the harbour on the eastern side.
- Royal Navy Club & Royal Albert Yacht Club is based near the mouth of the harbour on the eastern side.
- Royal Naval Sailing Association
- Stamshaw Lake Angling Club is based roughly half way along the eastern side of the harbour.
- Stokes Bay Sailing Club is based west of the harbour entrance.
- Tipner Boating & Angling Club is based roughly half way along the eastern side of the harbour.
- Victory Class Association is based near the mouth of the harbour on the western side.