A family member who used to sea fishing came across this cable, I would like to identify what type of cable is this and how to use it safely. Tried search on google but very limited information and I'm not an electrition to know how to turn this 100 ft safely for extension cord. It's looking like a very high-end cable when strips outside to get into the main 2 wires. the sticky glue sticks for days... The cable label "Seiscord Tm Mark Production Houston Texas USA"