Final answer:
In cases of conflicting rudder commands from the Master and the Pilot, the helmsman should promptly inform both regarding the conflict to resolve the issue and follow the agreed upon command for the safety of the vessel.
Step-by-step explanation:
When encountering a situation where conflicting rudder commands are given by the Master and the Pilot, it is important to ensure clear communication and safe navigation practices. The question "You should ensure the helmsman" pertains to who the helmsman should follow when receiving contradictory instructions. It is customary for the Pilot to have conduct of the navigation in confined waters, however, the Master always has the ultimate authority for the safety of the vessel. In practice, if there is a conflict, the helmsman should alert the Master and the Pilot promptly to resolve the issue. This might mean following the Master's orders but only after ensuring both parties are made aware and agree on the course of action to prevent any misunderstanding or potential navigational hazards.