The DDU type deep-sea releaser deck unit needs to be used with the deep-sea releaser. It consists of two parts: the deck unit chassis part and the transducer. It is powered by a battery and is equipped with a battery charger. The use scenario is the deck of the ship, which can adapt to the all-weather complex marine environment, with waterproof and dustproof design, complete functions, small size, easy to carry, high system integration, sturdy and durable, and can work in complex environments. The chassis is equipped with a cooling device, which is suitable for a wide range of applications. The interactive interface is intuitive and simple, suitable for strong light and night environment, stable and reliable performance, capable of releasing strong audio signals (9-14) kHz in a wide range, stable communication with the releaser, rich functions, in addition to the basic release function, it also has distance measurement, Attitude, battery, release status feedback, etc.