Eq-53 which safety precaution should be taken first by a boat operator when boating in stormy weather?

The answer is Make sure all aboard are wearing USCG-approved PFDs. And also Make sure all aboard are wearing USCG-approved life jackets. On a vessel underway, children under 13 must wear an appropriate Coast Guard-approved PFD, unless they are below decks or in an enclosed cabin. Life jackets must be Coast Guard-approved, in serviceable condition and the appropriate size for the intended user. 

make sure all aboard are wearing USCG-approved life jackets

Explanation:

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the correct answer is the following is a list of inventions made in the medieval islamic world, especially during the "islamic golden age" (8th to 13th centuries),[1][2] as well as the late medieval period, especially in the emirate of granada and the ottoman empire.

science and technology in the islamic world adopted and preserved knowledge and technologies from contemporary and earlier civilizations, including persia, india, china, and greece-roman antiquity, while making a number of improvements and innovations.

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