From Long Face Games
Watermarked PDF – $3.79 USD
An STL file representing the Confederate armed tug CS Neptune. She joined the gunboat CS Bayou City in attacking the Union squadron at Galveston, but was sunk.
Three variants are included: one unarmed, one with deck guns, and the third with guns and with cotton bale "armor". The model is scaled to 1:600, and prints well at 1:1200.