T-shirts and sweatshirt/fleece
Wash kit including small towel
Trainers or deck shoes - not black soles (shoes should not mark deck)
Spare shoes in case the others get wet
Sailing wellies are highly recommended for winter months and wet weather weeks
Thermal tops and bottoms are recommended in low season
Waterproof jacket (Wet Weather Gear provided)
Sunscreen and sunglasses may be needed - even in Winter
Passport, European Health Insurance Card (EHIC - replacement for E111. Obtainable online) & foreign currency (if trip is scheduled to go abroad)
Money (cashpoint machines are not always available at Marinas )