Retractable detector or measuring instrument - is fitted on base of ship's hull and is mounted on jack

摘要

The container is fitted to the lower side of the hull (1). The hull is opened to the space contained by the cylinder (2) which holds the vertical rails (5). The trolley (6) rides on the vertical rails operated by the actuator (17), connected to the hydraulic jack (8). The actuator passes through the seal plate (13). The frame (19) contains the cylinder (23) and the disc (26) is connected to the bar (30) which supports the detector.