| 摘要 |
A system, apparatus and method for alignment of a marine engine in a water vessel with either an existing or a design propeller shaft line of a propeller shaft of the vessel. The invention is also useful in positioning and aligning propeller shaft supports to the design shaft line before being secured to the hull of the vessel under construction. A laser gun for projecting a laser beam, a plurality of laser targets positionable into the propeller shaft support members, and a unique laser beam splitter temporarily connected to the engine output shaft cooperate to provide opposing colinear laser output beams viewably emitting from the laser beam splitter only when the marine engine is properly oriented coaxially of the engine crankshaft centerline with respect to the shaft line.
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