Horn Timber End: The extreme
aft end of the tug has no keel because the hull rises to make way
for the propeller and rudder below. Instead, the lower support and
centerline structure is the horn timber, which measures 12 feet
long, 14 inches deep and 12 inches wide.
The horn timber is the large
centerline timber seen here. It extends aft from the stern post,
which is just forward of the propeller. On either side of the horn
timber are featherboards that help the planks fasten to the
centerline. The end of the horn timber is notched to support the
12-inch thick rim timbers that form the outside edge of the tug’s
eliptical stern structure.
The featherboards are notched on their
outboard surfaces to receive the framing. Outboard of the
featherboards, a series of “nailer” pieces were installed
between the frames to add strength and stability and help hold and
separate the inner ceiling planking and outer hull planking. The
outside and inside hull planking can be seen.