I found those pictures but since the barge was not named, I did not post the link. The last picture, with the same legend seems to be from another barge, shorter than the first one with a see through side railing which is not the case with Dirk Septer picture.

Perhaps one of those owned locally by the tug's owner Stormaway Towing Ltd: BERT, ERNIE or MAGNOLIA S?

Could be the same unnamed one as with STORMAWAY V here:
http://prtugboats.blogspot.com/2014/05/stormaway-v.html