... twin Z-type propellers. The speed of the vessel is 11knots. The vessel is to be constructed, machinery installed in accordance ... with the latest rules for building & classing of steel vessel and to their special survey to hull and machinery for ... 3200HP 26m full-rotary tugboat, 1000HP 16m Tugboat, 34m Maritime supervise boat, cutter-suction dredger, bucket-wheel dredger, 73m container vessel, 40ton ...