Device for measuring difference between drafts on two sides of ship

Abstract

The objective of the invention is to improve the durability and reduce the weight of a device for measuring the difference between the drafts on the two sides of ship, by making it possible to prevent the occurrence of bubbles in a measuring liquid and prevent leakage of the measuring liquid. In order to measure the difference between the drafts on the two sides of a ship, a measuring device (1) is provided with: two liquid level measuring tubes (11) attached respectively to the port and starboard sides of the ship; a communicating hose (41) which causes the two liquid level measuring tubes (11) to communicate with one another; and a drum (51) to which a central portion of the communicating hose (41) is secured, and onto which a left hose section (41a) and a right hose section (41b) are wound simultaneously. In order to bend the central portion of the communicating hose (41) into a U-shape to catch said central portion, the measuring device (1) includes a hose catching projection (51c) which protrudes from an outer peripheral surface of a shaft member (51a) of the drum (51), and a resin coil spring (42) mounted on the central portion of the communicating hose (41).

Dependencies are inferred from the claim text.