海弛

AlanYiu45 · 發表於 2013-10-21 14:58:43

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仲有D救生笩未完成, 但都忍唔到手拎出嚟玩

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rgemhkie · 發表於 2013-10-23 07:57:22

why it can move laterally ??

AlanYiu45 · 發表於 2013-10-23 15:20:55

本帖最後由 AlanYiu45 於 2013-10-23 15:23 編輯

rgemhkie 發表於 2013-10-23 07:57
why it can move laterally ??

rgemhkie · 發表於 2013-10-24 08:11:41

great Thanks. I see now.
As it is so good why not most of vessels use this ? is it v expensove and difficult to maintain?
Thanks

AlanYiu45 · 發表於 2013-10-24 12:26:17

rgemhkie 發表於 2013-10-24 08:11
great Thanks. I see now.
As it is so good why not most of vessels use this ? is it v expensove and d ...

compare with propeller, waterjet is more complicated and expensive, usually for high speed vessel and luxury craft.

rgemhkie · 發表於 2013-10-24 13:26:11

AlanYiu45 發表於 2013-10-24 12:26
compare with propeller, waterjet is more complicated and expensive, usually for high speed vessel ...

Thanks Alan

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