The patented SeaShield Inspection Ports™ are fabricated from high-density polyethylene and other materials, which are suitable for marine use. The HDPE is specially formulated to include a minimum of 2% carbon black, which provides excellent resistance to UV weathering. The ports can be added to the SeaShield 2000FD™ System at strategic points to allow easy inspection of the pipe substrate underneath without disturbing the rest of the system in the process.