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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for many centuries there were important factors which the economies of the muslim empires developed increasingly. they applied economic procedures in production, investment, finance, taxation and property. they used to tax certain goods (for example: harvest), they charged interest on money lent, they signed contracts with merchants; they relied on a common currency, and they used checks as well as promissory notes. with the money collected by means of taxation, the government provided the needy with an income. in addition, trading networks covered huge distances, so far regions started to have contact and exchange goods. this trade network covered areas of asia, africa and europe.