The invention discloses an observation device of a rudder-blade sealing plate. The observation device consists of a welding seat plate and organic glass, wherein the welding seat plate is arranged on a sealing plate; the organic glass is arranged in the middle of the welding seat plate; a rubber washer is arranged at the periphery of the organic glass; an external thread ring is arranged on one side of the organic glass; an observation hole is formed in the sealing plate; a round steel bar is fixed at the observation hole through a nut. The observation device has the benefits that the observation device is simple to manufacture and mount, is low in cost, does not need to be maintained, is good in airtightness, is durable, can be used for underwater observation, is convenient to operate, and can be manufactured in batches and applied to various ships.
Observation device of rudder-blade sealing plate
2015-11-18
Patent
Electronic Resource
English
IPC: | B63H Schiffsantrieb oder Steuerung der Schiffe , MARINE PROPULSION OR STEERING |
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