Coast Guard Custom Ship Cap Barbel Class Submarine USAMM US Coast Guard Custom Ship Cap US Coast Guard Custom Caps and Apparel Coast Guard Custom Ship Cap Griffin Class (C3) Submarine Tender US Coast Guard Custom Ship Cap US Coast Guard Custom Caps and Apparel Coast Guard Custom Ship Cap Providence Class GMC USAMM. Customizable Coast Guard Ship Caps Add custom text to the front of your Coast Guard cap and if you like, text on the back of the cap. Like all of our custom products, these caps are embroidered at our shop in Texas. Hat Specs: 85% Acrylic, 15% Wool. Structured, mid profile, six panel with pre curved visor, sewn eyelets, and adjustable hook and loop closure. One size. This item uses hook and loop fasteners. (See video)