1.A sailor uses the rudder to make the ship go in the correct direction.

1.水手用导航。

2.An oar often acts as rudder.

2.桨常可起用。

3.Turn the rudder slightly so that we can ease the boat round.

3.慢慢掌, 这样我们就能使船稳稳地拐过去。

4.II. Operational principles of airplane flying attitude: mainly reflected in the ailerons ,elevons and rudder operation system.

4.二、飞机飞行姿态操理——主要反映在副翼、升降翼、方向操系统里。

5.13958681890 This ship shall be of all steel welded construction with one continuous deck, bulbous stern, bulbous bow, single propeller, single rudder, forecastle, poop, and of stern-engined type.

5.船型及用途SHIPFORM AND PURPOSE 本船为钢质结构、单甲板、尾机型、，单桨、单，由柴油机驱动螺旋桨推进散货船，具有球尾和球鼻首线型。