The　detection　and　positioning　of　underwater　power　transmission　cables　are　crucial　for　the　operation　and　maintenance　of　marine　power　transmission　projects.　Existing　location　solutions　are　primarily　based　on　magnetic　detection　via　electromagnetic　induction,　but　often　suffer　from　imperfections　and　a　lack　of　experimental　validation.　This　paper　proposes　an　undersea　cable　location　method　that　uses　a　twin　triple-axis　coil　sensor.　This　method　is　more　comprehensive　and　feasible　and　can　accurately　calculate　the　relative　distance　and　angle　between　the　detection　base　array　and　the　undersea　cable.　After　mathematical　modeling,　the　feasibility　of　the　method　was　verified　through　experiments.　©　2024　IEEE.