(a) ? a coasting vessel; (b) = land-frigate n.

attributive and in other combinations (in sense 1), as coasting-duty, coasting-pilot, coasting-trade, coasting-vessel; coasting iron n. Obsolete ?…

A vessel employed in sailing along the coast, or in trading from port to port of the same country. (The usual modern sense.)

Apparently: a slow vessel used for sailing close to the coast; = drogher, n. Obsolete. rare.

A West Indian coasting vessel; hence transferred to other slow clumsy coasting craft.