Marine Grade Plywood (Local?)

Does anyone know of a local source of marine grade plywood? I only need 1 or 2 sheets of 1/2" to build a casting deck and bench seat. Thanks.

21’ Sea-Pro CC
Yamaha 150
2008 Dodge Ram Mega-Cab 4x4 6.7 Cummins

“There is no hunting like the hunting of man, and those who have hunted armed men long enough and liked it, never care for anything else thereafter.”
Ernest Hemingway

Southern Lumber 744-6281 freddie