Propulsion is provided by a rocket engine, rather than a propeller and rudder, which makes steering difficult.

推进器是由火箭发动机提供的，而不是螺旋桨和方向舵，这使得转向变得困难。

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Inaccessible areas will be constructed as void Spaces. Eye pads will be provided on port and starboard for lifting rudder and propeller.

不可到达的区域建造成空舱。在船的左右舷安装眼板以方便吊装舵和推进器。

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A part or surface, such as a wing, propeller blade, or rudder, whose shape and orientation control stability, direction, lift, thrust, or propulsion.

翼剖面；机翼；翼面一个部件或平面，如机翼、螺旋桨叶、方向舵等，其形状或方位控制稳定性、方向、抬升、冲击或驱动。

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The Japanese say the powerboat repeatedly came very close to the factory ship, the Nisshin Maru, while activists tried to entangle its rudder and propeller with a rope.

VOA: standard.2010.01.06

This was then used as a guide for a close-up inspection of the tight and tucked-away spaces between the propeller, shafting, rudder and hull.

ECONOMIST: Monitor