| 摘要 |
<p>The invention relates to the design for a tug provided with towing gear that can turn through 360 degrees in the horizontal plane, where the ratio of both the hull length L of the tug and the lateral distance W between the two propulsion units have values with respect to the diameter D of the carousel towing gear such that it is possible to manoeuvre the tug very accurately and to make it turn quickly and in a controlled manner at relatively high towing speeds, with adequate stability.</p> |
