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Zustand: gut. Bow Tug Operations with Azimuth Stern Drive Tugs In englischer Sprache. pages.

Polestar. latest edition, softcover, illustrated. Bow tug operations at a ship having headway are very risky, particularly in the case of ships with a very high speed on dead slow ahead â" a situation increasingly seen with large container vessels. The problem starts with the approach towards the bow and then with the procedure of passing the towline. Because of the risks involved, tug masters that have to carry out bow tug operations, and particularly tug masters of ASD-tugs that have to operate bow-to-bow, should be well trained and aware of all the possible risks. Â These issues are all dealt with in this book in an easy understandable way, resulting in a set of guidelines for safe operations at the bow. This third edition has been updated for several crucial aspects that play an important role in bow-to-bow operations, such as skeg and stern design. As the skeg i.…

Polestar Rotterdam, hardcover 110 pages, illustrated.ÂOver the years numerous harbour tugs have capsized, often with tragic consequences. Stability is a complex subject and mainly a specialism of naval architects. Tug masters seldom have this detailed knowledge â" yet they experience the effects of a tugâs stability every day when manoeuvring their tug, either free sailing or when assisting ships.Tugs will often be working with towline forces, hydrodynamic forces, steering and propulsion forces at or near their maximum with respect to the vesselâs stability.ÂIt is, therefore, not just desirable but necessary for tug masters to have at least a basic idea of the elements of stability. They need to know where the limits are, and what the consequences could be, if tug handling practices donât conform to the rules of stability in normal circums.…