For a single-berth pier, the clear water area required for tugboat assistance should be?

The clear water area required for tugboat assistance at a single-berth pier is primarily determined by the maneuverability of vessels, particularly the largest ship using the facility. This area is crucial for ensuring safe operations, allowing for adequate space for tugboats to effectively assist with berthing and unberthing maneuvers.

The calculation of the clear water area generally considers the beam of the largest ship because this dimension influences how much space is needed for tugboats to operate around the vessel safely. The requirement typically includes a multiplier on the beam to account for additional clearance needed when adjusting for various operational conditions, such as wind and current, and includes extra space to provide a buffer for the tugboats.

In this context, the requirement of 2 times the beam of the largest ship, plus an additional margin of 30 meters, is particularly important as it allows for enhanced safety and effective handling capabilities in confined waters. The added distance accommodates the need for the tugs to operate effectively without risk of collision, ensuring they have sufficient room to maneuver and position themselves appropriately around the vessel.

Options with different parameters either underestimate the space required by not having a sufficient factor concerning the beam or do not account for the necessary clearance distances required for safe tugboat operations in typically