Recommended equipment for a vessel heading offshore

Liferaft 

Jacklines

EPIRB (check battery)

Spotlight

Red lights down below 

Stove potholders

Spare LPG

Lighters for stove (one is none and two is one)

Fishing gear (“Meat Hook”)

Fish cleaning knife

Sextant 

Sight reduction tables

Lee Cloths 

Thermos 

Mugs for crew

Water bottles

Water treatment for ship’s tank water

Pressure cooker

Emergency bottled water

Emergency steering 

Tools (crescent wrench, filter wrench, screwdrivers, wrenches for packing gland)

Spare belts, filters, oil, ATF, impeller, impeller gasket, and coolant. 

Fuel container for priming fuel filters

Fire blanket 

Wood bungs

AIS VHF radio

Handheld VHF radio

The following link is an excellent outline for boat prep. This list of safety equipment is the result of decades of lessons learned from disasters offshore. It is the MINIMAL requirement for racing in these waters and it is advisable to go above and beyond.