That was my understanding of that service.<quoted text>
Heck the whole reason the Marine Corps was formed was to protect Navy ships.
Resolved, That two Battalions of marines be raised, consisting of one Colonel, two Lieutenant Colonels, two Majors, and other officers as usual in other regiments; and that they consist of an equal number of privates with other battalions; that particular care be taken, that no persons be appointed to office, or enlisted into said Battalions, but such as are good seamen, or so acquainted with maritime affairs as to be able to serve to advantage by sea when required; that they be enlisted and commissioned to serve for and during the present war between Great Britain and the colonies, unless dismissed by order of Congress: that they be distinguished by the names of the first and second battalions of American Marines, and that they be considered as part of the number which the continental Army before Boston is ordered to consist of.
Ordered, That a copy of the above be transmitted to the General.
Second Continental Congress on 10 November 1775[25
But cons may have a different, revised history on that.