When should you consider using a dive knife or shears?

Using a dive knife or shears is primarily associated with safety measures, particularly in situations of entanglement emergencies or when assisting others who may be in distress. During scuba diving, divers can sometimes encounter hazards like fishing lines, underwater vegetation, or other debris that might wrap around a diver's body or equipment, posing serious risks. A dive knife or shears can be invaluable tools in these scenarios, allowing for quick and effective removal of entanglements to prevent accidents or injuries.

While exploring wrecks might present a context where having a cutting tool could be beneficial, safety remains the foremost priority; hence, the real necessity lies in the capacity to respond to emergencies. Considering that training is aimed at preparing divers to handle real-world situations they may encounter while diving, the use of these tools becomes essential in actual dive conditions, not merely during training or under specific instructions from a dive master. Additionally, dive knives and shears serve as tools for general safety, which can be practical in various circumstances rather than being restricted to defined situations.