Hubbell's vinyl jacketed 30A 125V cable set is factory pre-wired with molded-on devices.
Connector end has a non-metallic threaded sealing ring which makes inlet/connector interface watertight.

Designed to coil easily and lie flat
10 gauge, 3 conductor flexible cable
Internal bull ring provides added strain relief against boat movement, crew traffic, and rough handling
Molded flexneck prevents right-angle kinking at the ends of the cord
UL listed