Subsea Power Cable Area: Underground / Underwater Crossing of Power Cables. The electrical cables in its interior are buried at 1.22 m close to earth and 2.13 m in the channel area as mentioned in their attributes. It was combined with the Paper Letters Section to represent only the area in the elaboration of the Avgante since the 2101 letter has a scale of 1:25000 and these cables become ineligible as the distance between them is 25 m.