- Admiralty Easy Tide (tide prediction data)
- Adverc Battery Management
- British Marine Federation
- B & G (Instrumentation)
- East Coast Rivers (Rivers Deben and Ore entrance charts)
- Hydrographic Office (online updates for mariners)
- Maritime and Coastguard Agency (CG66 complete/update online)
- MMSI Directory (boat/owner details)
- Ofcom (radio licensing authority for VHF)
- Raymarine (Instrumentation)