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DEFINITIONS
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| ABS
GRADE - (fabricated hatches, doors,
manholes, scuttles) - Products would be
fabricated in accordance with specifications
generally acceptable by the American Bureau of
Shipping and most classification societies.
These specifications would include panel and
frame of cover and coaming thickness, type and
quality of materials and welding details. |
| BULKHEAD
CUTOUT - Size of the rough opening in
the bulkhead or deck, before coaming
installation. Items supplied by Freeman
Marine would be dimensioned to fill this
opening. |
| CLAMP
GRIP - Window has two main
components, a mainframe complete with glazing,
and the inner trim ring. Mainframe is
installed from outside, the trim ring is
installed from inside and screwed to the
mainframe, trapping the bulkhead between the two
frame components. |
| CLEAR
OPENING - Actual dimension that you
can pass or see through in a door, hatch,
manhole, window, scuttle, or portlight. |
| CONCEALED
DOGS - Dog components do not extend
beyond the face of the door panel or frame. |
| CONCEALED
HINGE - Hinge components do not
extend beyond the face of the door panel or
frame. |
| FLUSH
DOORS - Special cast aluminum pockets
are installed in the outer "skin" of
the door panel. A low profile door dog is
installed in each pocket. Dog does not
protrude beyond the pocket. |
| KNIFE
EDGE SEAL - A method of sealing a
door or other closure, where a relatively thin
edge of the metal frame seals by pressing into a
gasket from the perpendicular. |
| LAMINATED
GLASS - A plastic laminate is
sandwiched between two or more panes of glass,
and the unit is sealed under pressure and heat,
forming a bond. Not as strong as tempered
glass, but if broken, the fragments normally
adhere to the laminate material, staying in the
window frame. |
| LEFT
HAND OPENING - The term Freeman
Marine uses to define a door that from the
outside of the compartment swinging toward the
operator has hinges on the left side. |
| MITERED
CORNER - A door or door frame joint
formed by fitting two pieces together beveled to
form a corner. |
| PLATE
GLASS - Float glass with polished
parallel surfaces. Glass has been annealed
during the production process, but has not been
tempered. Will break into jagged pieces. |
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 POLYCARBONATE
- Synthetic compounds used for window glazing
purposes. Brand names include Lexan,
Tuffak, Lucite and Plexiglas. |
| RADIUS
CORNER - A formed corner, such as
would normally be specified on a door or window
frame. Typically much stronger than a
mitered corner. |
| RAISED
CENTER SPINDLE - Customizing the
vertical shafts in Freeman cast aluminum
hatches, so that the top of the shaft extends
beyond the hatch cover. This allows the
cover to be surfaced with teak or some other
covering, while still allowing access to the
mechanism. |
| RIGHT
HAND OPENING - The term Freeman
Marine uses to define a door that from the
outside of the compartment swinging toward the
operator has hinges on the right side. |
| SPRING
BALANCED - A method of making larger
fabricated hatches and scuttles easier and safer
to open. A large spring is installed on
the fabricated item and tensioned so that the
weight of the cover is offset by the tension of
the spring, reducing the effort required to open
the cover. A spring-balanced hatch is not intended
to swing up when opened without operator
assistance. |
| STANDARD
GRADE - (fabricated hatches, doors,
manholes, scuttles) - Products would be
fabricated in accordance with specifications
generally acceptable by the American Bureau of
Shipping and most classification societies.
These specifications would include panel and
frame of cover and coaming thickness, type and
quality of materials and welding details. |
| T STYLE
HANDLE - A removable Freeman deck
hatch handle, that fits into the vertical shaft
of the hatch mechanism. Used mainly for
additional security and limiting access, the
handle is stored elsewhere on the vessel. |
| TEMPERED
GLASS - Plate glass that has
undergone a tempering process, making it
significantly stronger and more
impact-resistant. If broken, tempered
glass breaks into small pieces instead of jagged
pieces. |
| WEATHERTIGHT
- An industry definition of marine closures
indicating that they could be exposed to the
elements, with the probability that only small
amounts of water, wind or rain would pass thru
the closure. |
| WATERTIGHT
- A closure designed and constructed in such a
manner that no water can pass through.
There are different definitions of watertight,
depending on the location in relation to the
waterline of the vessel and the importance of
the seal desired. |
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