I enjoy fishing and try to get out at least 2 or 3 times a year. Sometimes the fish are biting like crazy but other times they are just not very active. I think with a Underwater Exploration Vehicle like the Nøkken 3 ROV the fishing experience would be totally changed. I can imagine scouting the bottom of the river looking for the best spot and it would be great to hanging out watching your hook and seeing the fish swimming around it reacting to your jigging. Eirik Taylor has built many of these ROVs and this time around he decided to solve the large power cable issue. Since he needs a significant amount of 12 volt DC power on the ROV the DC power tether cable needed to be substantial. What he has done is use the unused CAT5 wires to send down 130V DC. These days POE is quite popular but that typical max voltage is around 57 volts. Looks like typical CAT5 cable is rated at 300 volts so as long as you don’t do the tong test on any of the live wires you should be fine. 🙂