Copies of the _Steam Battery's_ plans were obtained at Copenhagen in
September 1960 through the courtesy of the archivist, and were found to
consist of the lines, copied in 1817, an inboard profile and
arrangement, and a sail and rigging plan. From these the reconstruction
for a scale model was drawn and is presented here with reproductions of
the original drawings upon which the reconstruction is based.

It is apparent that Montgery's description is generally accurate. The
vessel is a catamaran, made of two hulls, double-ended and exactly
alike. The outboard sides are "moulded," with round bilges, the inboard
sides are straight and flat, as though a hull had been split along the
middle line and then planked up flat where split. The hulls are
separated by the race, in which the paddle wheel is placed at
mid-length. The topsides are made elliptical at the ends, and the
midsection shows a marked tumble-home over the thick topside planking
but less on the moulded lines.

[Illustration: Figure 6.]

The lines plan agreed rather closely to Montgery's description of the
hull. After careful fairing it was found the lines drawing would produce
a vessel 153 feet 2 inches overall outside the stems, or about 151 feet
over the planked rabbets, with a moulded beam of 56 feet and extreme
beam of 58 feet. The moulded depth was 22 feet 9 inches and the width of
the race was 14 feet 10 inches, plank to plank. The room and space of
framing shown was 2 feet. The designed draft appears to be 13 feet and
this would bring the port sills 5 feet 6 inches above the loadline and
the underside of the gun-deck beams about 2 feet 9 inches above the
loadline.

The lines plan is a Danish copy, probably of the building plan by Noah
Brown, and may be based on the plan Montgery obtained from Brown. The
spar deck has the iron stanchions (Gurley translated these as
"chandeliers") which are set inboard 4 feet from the plank-sheer. This
gives room for cotton bales, outboard the stanchions, to form a
barricade. As will be seen by comparing the original Danish drawing with
the model drawing, the construction indicates that the iron stanchions
should be carried around the ends of the hull in the same manner as
along the sides, since the lower ends of the iron stanchions pass
through the spar deck and are secured to the inside of the inner ceiling
of the gun deck. The rudders are as shown in the Danish drawing, and it
is supposed that they were operated f