Sufficient fuel for the journey?
Is there sufficient fresh water in tank?
Check sufficient gas for journey
Check no ropes or other items hanging over transom area (foul propellers)
Check all lower level portholes are secure
Boil mains kettle for tea/coffee
Disconnect mains shore cable
All cupboards secure and spare luggage stowed away
Start Engines, check oil pressure gauge and switch on Raymarine kit
Radio check, Solent Coastguard channel 67
Switch on iPad to log journey
Check cooling water is flowing astern and cast off
Lift fenders when outside marina