| 摘要 |
PCT No. PCT/GB87/00099 Sec. 371 Date Aug. 9, 1988 Sec. 102(e) Date Aug. 9, 1988 PCT Filed Feb. 10, 1987 PCT Pub. No. WO87/04743 PCT Pub. Date Aug. 13, 1987.An underwater excavator in which when energized by a supply of hydraulic oil or other means a propeller is set in motion with water being drawn through a water intake into a cylindrical tube and expelled at the water outlet to create a flow of water of sufficient volume and velocity to blow away seabed materials. Thrust and torque are counteracted by the suction force developed at the water intake. Optional filter nets or sieves may be fixed to a foot of the machine to capture samples of the material washed out of the seabed.
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