Can a standby diver be launched as a working diver?

The rationale for the answer lies in the specific conditions governing when a standby diver can be transitioned into a working diver role. Standby divers are generally designated to assist or take over in case of an emergency during a dive operation. However, there are limits to this practice to ensure safety and adherence to diving protocols.

In this case, a standby diver can be launched as a working diver during a surface-supplied no-decompression dive of 60 feet of seawater (fsw) or less. This limitation aligns with safety regulations that consider the depth and type of dive to minimize risks associated with a standby diver transitioning to a working diver. When the dive is conducted at shallower depths and does not require decompression stops, the hazards are reduced, making it more acceptable to have a standby diver perform the role of a working diver in these specific circumstances.

On the other hand, launching a standby diver as a working diver at greater depths, or in situations that require decompression, poses significant risks and is not permissible under standard diving practices. Therefore, the correct answer reflects both the safety protocols in place and the conditions under which a standby diver may effectively and safely transition to a working diver role.