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Since the blade in a boat engine is so sharp that it often hurts divers, sea animals and coral reef lives in shallow coastal area severely. Moreover, some boats used to be rapped in a net or seaweeds because of a propeller keeps spinning.
To cover this shortcoming, Air booster is made without a propeller. Instead, It can gain momentum as it lets out pressured air from a boat engine. Consequently, We can prevent accidents which get divers and animals hurt in the sea as well as it decreases the number of trapped ships.
cheonansi, South Korea