Jeff wrote:


It could be a hip tow, so the barge is on the port side. If the
viewing angle is on the starboard side of the tug, then its possible
for them to line up.


Well you came closer than anyone Jeff. The key is the item towed is
mostly submerged. The boats that tow icebergs also display the all
around blue in addition to towing config lights.

And all blue light tows are all astern, no one pushes a flexy, dracone,
or berg.


Usually a large tow, a long distance behind the towing vessel, will have
it's own lights to indicate it's presence.


Not in this case Doug. Never pass a blue light tow close astern. Infact
if I could not contact the vessel I'd give a min of 2 miles way.


Joe