What type of lifeboats must be equipped with compartments for storing canned drinking water?

Motor-propelled lifeboats are required to be equipped with compartments for storing canned drinking water because they must meet specific safety regulations aimed at ensuring the survival of individuals in an emergency situation. The presence of drinking water is vital, as it can be crucial for survival during prolonged periods of abandonment at sea.

Unlike rowing or sailing lifeboats, which may have limited capacity or are often designed for short-term use, motor-propelled lifeboats typically are expected to carry a higher number of passengers and survive longer durations without immediate rescue. Open lifeboats may not be inherently designed with storage compartments for essentials such as drinking water, making the motor-propelled design the most suitable for the requirement.

Thus, the specific design and expected use of motor-propelled lifeboats necessitate the inclusion of such compartments to ensure that survivors have access to fresh drinking water during a distress situation.