Would a business that rebuilds and remanufactures small boat motors, whose owner occasionally goes out on the water to test these motors, need Longshore and Harbor Workers Compensation coverage? November 27, 2016 A Would a business that rebuilds and remanufactures small boat motors, whose owner occasionally goes out on the water to test these motors, need Longshore and Harbor Workers Compensation coverage? No, unless the boats were commercial vessels or recreational vessels over 65 feet in length