Using local engine control with relayed verbal orders, the Master begins to regain some control over the vessel's drift. What communication discipline is essential during this phase?

A. Orders should be given as quickly as possible with no time taken for acknowledgement or confirmation, to minimise delay

B. The engine room should be left to interpret general intentions without specific orders, to save communication time

C. Orders must be given clearly, acknowledged back, and confirmed as executed, with deliberate allowance for the extra delay inherent in local control — ambiguous or rushed orders relayed verbally through an additional link (bridge to engine room rather than direct telegraph) carry a higher risk of miscommunication exactly when precision matters most

D. Communication discipline is unchanged from normal bridge telegraph operation and requires no special attention

A. Take no action since the spring line alone is assumed sufficient to control the vessel indefinitely

B. Immediately let go all remaining lines, assuming this will resolve the situation

C. Immediately inform the engine room directly (not just via telegraph) of the non-response, assess the vessel's current trajectory and what is still controlling it (the spring line, remaining wind effect, any tug), and prepare to use those remaining resources while engine control is investigated — do not wait passively for the engine to respond on a repeated order

D. Repeat the same telegraph order several times and wait without taking any other action

A. The spring line could be overloaded beyond its safe working load by the combination of wind force and the bow swing, risking it parting under tension — if it parts, the vessel would suddenly lose the one remaining controlling line with no engine available to compensate, and the snap-back risk to anyone near the line increases as load builds

B. The bow swinging further off the berth is the intended outcome and requires no further attention

C. The only risk is to the berth structure, not to the vessel or its mooring equipment

D. There is no increased risk; the spring line is designed to handle unlimited load regardless of wind or engine state