Question 4219 Deck General

The correct answer is B) It develops more bollard pull for the same horsepower. This statement is false because twin-screw tugs do not necessarily develop more bollard pull compared to single-screw tugs of the same horsepower. Bollard pull is primarily dependent on the engine power, propeller size and design, and other factors, not just the number of screws. In fact, a well-designed single-screw tug can sometimes achieve similar or even greater bollard pull than a twin-screw tug of the same horsepower. The other statements are true - a twin-screw tug provides redundancy if one engine fails, is generally more maneuverable, and is more susceptible to propeller damage from debris in the water due to the increased exposed surface area.