Scrapheap river barge - not in 15mm?

Despite blasting out a bunch of 15mm kits the past few days I decided to pull a 90-degree turn back into Scrapheap...with more terrain.  One of the locations requires a river barge which docks during the game (with loot on board).  For over a year I've put off building a river barge.

 

I changed that yesterday/today.