For boat manuals and guides to the Thames and Portland, there’s a separate page under “our boats”

Charter boats Hellfins has used

Top Portland skipper: Smudge and Scimitar Diving
Top Swanage dive outfit: Divers Down, Swanage
The wonderful Steve and Caroline. Channel Diving, Brighton, Eastbourne, and France (intentionally).
It’s not the rib-you’re-on, it’s the Tiburon with Dave McBride in the Isles of Scilly
Come back half-a-stone heavier from the Valkyrie in Scapa flow
Proper exploring on the Gaelic Rose in Western Scotland
Sound Diver from Lochaline dive centre
Aquanauts and the inimitable Dougie in Plymouth
Great Plymouth skipper: Pete and Venture

Weather sites

XC weather, Janos’s favourite weather site
Magic seaweed, pretty graphics”
Met Office coast forecast
Met Office inshore waters forecast