The checking tug also comes in to play in stopping the momentum of the ship lest its engine doesn’t respond in time.
Now since the stern cants (moves laterally sideways) while a ship comes astern due to transverse thrust, a towing tug is employed in this case at the stern and the engine is used sparingly just to adjust any deviation in the desired direction of motion.Īt the bow of the vessel, a checking tug is also deployed to control it and prevent it from swinging waywardly. Sometimes ships have to cross stern first (i.e., moving backward) through the restricted channel between ships or buoys, using engines and bow thrusters. While piloting in the narrow confines, in restricted waters or maneuvering vessels in somewhat constricted space, bow thrusters or tugs can be handy. Today, modern ships have bow-thrusters to control the bow while going ahead or astern. Then, to overcome the anchor’s drag, propulsion is used giving good steering at low speed. Dredging anchors is a method which is used to assist a ship in maneuvering during unavailability or inability of tugs to assist as required.Ī dredging anchor sniffing the bottom of the ship would hold the bow steady while allowing a ship to move fore and aft, this would shift the ship’s pivot point forward. Ship’s anchors can be used not only for berthing but also during maneuvering through channels and other similar areas with restriction in movement.
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