| 摘要 |
<p>u The lever system comprises a crane (8, 9, 27) and a lever element that is built as a pallet or cartridge (16). The lever system comprises a crane (8, 9, 27) and a lever element that is built as a pallet or cartridge (16). The lever element may have adjustable holders (28) for adapting to the underside of different ships (2). The holders may comprise adjustable bearing supports. The lever element may have holder systems (29) to latch carrier spars (31) or carrier cords of the crane. The lever element may be lowered beneath the water surface (25) to below the keel of the to-be-levered ship such that a ship can travel on the lowered lever element. There may be a centring system (41, 42) for centring of the lowered lever element about the moving ship. The centring system may comprise a control board and a backboard that slides against the outer skin of the ship.</p> |
