The Maine merchant and marine flag, also known as the state naval ensign, is intended to be flown on vessels that call Maine home. It was designated by the Maine Legislature in March 1939, and the earliest known example was presented the following month to famed explorer Donald MacMillan ahead of an expedition to the Arctic aboard the schooner Bowdoin. Though tattered from years of service, this same flag still exists today and is on display at Maine Maritime Academy. The Maine Merchant & Marine flag hat features our Maine Merchant & Marine flag patch in traditional colors sewn to an unstructured, 5-panel hat with matching sewn eyelets and a snapback closure. Fabric is 100% organic cotton. One Size Fits Most.