Which type of vessel greater than 100 GRT is not required to have an EPIRB?

The correct choice indicates that a non-self-propelled vessel in tow is not required to have an Emergency Position-Indicating Radio Beacon (EPIRB) if it is over 100 gross tonnage (GRT). The rationale behind this is that the responsibility for safety equipment, including an EPIRB, typically falls on the towing vessel rather than the barge or non-self-propelled vessel being towed.

The EPIRB is crucial for vessels operating independently in the marine environment, as it allows for distress signals to be sent in case of an emergency. However, when it comes to non-self-propelled vessels in tow, they are considered extensions of the towing vessel for safety and regulatory purposes. Therefore, they do not individually require their own EPIRB as long as the towing vessel is equipped with the necessary safety devices in accordance with regulations.

Vessels such as cargo ships, fishing vessels, and passenger ships are required to have EPIRBs since they operate independently and may need to alert rescue services in emergencies. Each of those types of vessels has specific safety requirements that are mandated by regulations to ensure the safety of the crew and passengers aboard.