Baier manufactures hinged hatches in round and
oval shapes, which are coaming-mounted and designed
for quick release with a grab handle as shown. This hatch
is often used as a crawl-through escape hatch.
The standard sizes are 22" round and 15"x24" and
13-1/2"x20-1/2" oval (clear opening dimensions).
All Baier Hatches use the patented strongback system
of securing the hatch cover to the deck. It is superior
to other more complicated hatch closure systems because
it is simple (only two moving parts), it is stronger, it
is more reliably watertight, and it is more easily
serviced (parts are readily available and replaced in the field).
The complete model BCHH hatch cover product line
is available in both cast aluminum and cast steel. No
other flush hatch is available in cast steel (which is
stronger, more durable, and more impact resistant when
compared to iron hatches, especially in cold climes).
Each hatch has an underside escape turning bar
for safety. A turning wheel is optional.
The deck ring is available in galvanized mild steel.
The coaming is mild steel.
A detachable Hex T-handle is used for quick
operation, and can be stored separate from the hatch for security.
Canadian Patent 772,905.
United States Patent 3,209,663