Here are some distributors that stock marine ply. The BS1088 Okoume, BS1088 Hydrotek and BS6566 Aquatek:

ATLANTIC PLYWOOD, MA, ME 800-360-3923
CONNECTICUT PLYWOOD, CT 860-953-0060
ROBERTS PLYWOOD, NY 631-586-7700
WOODFORD PLYWOOD, GA 229-883-4900
McEWEN LUMBER, NC 919-772-7550
SEAFARER MARINE, FL 954-763-4263
RIVERSIDE LUMBER, LA 504-242-6626
RARE EARTH HARDWOODS, MI 800-968-0074
HOUSTON HARDWOODS, TX 713-686-6176
FOREST PLYWOOD, CA - 714-523-1721
ALMAQUIST LUMBER, CA 707-668-5652
McBEATH HARDWOOD, UT 801-484-7616
CROSSCUT HARDWOOD, OR 503-224-9663
PLYWOOD TACOMA, WA 253-383-5571
WEST WIND HARDWOOD, BC 800-667-2275
LL JOHNSON LUMBER (MI) - 800-292-5937
SEAFARER MARINE (FL) - 954-763-4263
HOMESTEAD HARDWOODS (OH) 419-684-9582
E-BOAT (FL) - 772-770-1225
RUSSELL PLYWOOD - 610-374-3206
PLYWOOD & DOOR (IL) - 708-354-2155
STRAIGHT LUMBER (CO) - 303-366-3561
ML CONDON LUMBER (NY) - 914-946-4111

: I am going to try and build the Point Bennet by Duane Strosaker
: this winter and would like to get some sources for Okoume BS
: 1088 Plywood. I am currently in SC near Myrtle Beach (Upstate
: New York is too cold this time of year) and would like to get a
: supplier as close as possible to minimize shipping costs. Any
: suggestions or references to prior posts would be appreciated.

: Charles Robinson