What is a jack knife used for in a life raft?

A jack knife in a life raft serves primarily as a tool for emergency cutting of materials. In survival situations at sea, there are many scenarios where quick action is necessary, such as cutting away rope, freeing individuals from entrapment, or modifying materials for use as improvised equipment. The design of a jack knife, typically featuring a folding blade, makes it versatile and safe to store while also ensuring it can be easily deployed when needed.

While cutting ropes is a function of the jack knife, the emphasis in this context is on its role during emergencies. Preparing food and accessing the life raft quickly are not primary functions of a jack knife in this specific survival setting, further narrowing down its purpose. The emphasis on emergency cutting highlights the critical utility of the jack knife in ensuring safety and survival during unexpected maritime events.