Night view at sea

tunnel_slep At night, we are in a Norwegian fjord fishing from a small boat. There is traffic control in the area. Small boats give way for vessels following the lanes. The scene to the left is observed. The contraption(s) appears to move as some sort of a unit. It follows the lane pattern. What is it? Are we in the danger zone? What action would you undertake?

{ version 2020-01-05 psa @2024-10-16 08:52:09+00:00 #414 }