DOCKSIDES PORTLAND NAVY Marine Corail Nouma Docksides Portland Waxed Brown Gum Sebago Sebago Mens Docksides Portland Leather Shoes Docksides Sebago. The Docksides Portland Loafers by Sebago are nautical loafers designed for sailing and to deliver high performance in marine environments. Crafted from a single piece of unlined full grain leather and hand stitched using traditional craftsmanship, they guarantee quality and durability. They feature a leather insole, a 360?? leather lacing system, and a non marking, ribbed rubber sole to ensure stability and traction in all conditions.