Tugs play a critical role in maintaining control of large vessels during bad weather, when wind, swell, and tidal forces quickly overwhelm a ship’s own manoeuvring ability. High-sided vessels such as container ships, RoRos and cruise ships present huge windage areas, causing the bow or stern to fall off rapidly in crosswinds. At low speeds, rudders and bow thrusters lose effectiveness, leaving pilots with limited means to counter drift, yaw or surge. In these conditions, tugs provide the controlled, directional force required to keep the vessel on track, stabilise heading, prevent unwanted movement and maintain safe clearance from berths, dolphins and other structures.

Beyond simple pushing or pulling, modern ASD, tractor and rotor tugs are essential safety assets in exposed approaches, river entrances and terminals where strong weather threatens to overpower the ship. They deliver high bollard pull, indirect escort forces and rapid corrective thrust that prevent groundings, allisions and loss of control. In heavy weather, tugs are not just helpful but indispensable—acting as the primary control mechanism that ensures ships can berth, unberth, turn and transit safely despite adverse conditions. Barry discusses all these aspects.

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At Captain Barry Sadler Maritime Training & Consultancy we deliver industry-leading online courses, oral exam preparation, and professional resources for deck officers, cadets, and maritime professionals. Fully aligned with UK MCA standards, our training helps you build knowledge, confidence, and a successful career at sea.

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