Which requirement applies to all vessels over 300 gross tons operating within range of a MF-DSC equipped shore station?

The requirement that applies to all vessels over 300 gross tons operating within range of a MF-DSC equipped shore station is that only one maintenance option is required for these vessels. This means that such vessels must have a single, defined method for maintaining their equipment to ensure compliance and operational readiness.

Given that maintenance of communication equipment is critical for safety and operational integrity, having a clear and succinct maintenance policy simplifies the responsibilities and processes onboard. It allows for effective management of the vessel’s communication systems and ensures that any repairs or servicing can be performed consistently and efficiently.

While other options may touch on aspects related to watchkeeping, qualifications, and spare parts, they do not specifically address a requirement that is applicable to all vessels over 300 gross tons within the context of MF-DSC equipped shore stations as outlined in the regulations. Thus, the focus on a singular maintenance requirement reflects the regulatory emphasis on streamlined operation and safety for vessels operating under these conditions.