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 TB 55-1900-201-45/1
g. Fire Axes. All vessels shall carry at least the minimum number of fire axes as set forth in the vessel's Boat
Set Listing. Manner barges shall carry at least two fire axes. The fire axes shall be located at the designated location in
accordance with the vessel's drawings.
SECTION XV. Life Saving Equipment
2-78. Requirement. Lifesaving equipment is a required emergency equipment and a must necessity, and must be
maintained in a safe and reasonable operating condition at all times.
Categories of Deficiencies. The major categories of deficiencies found in lifesaving equipment are as follows:
a. Deterioration, general or local.
b. Insufficient equipment on board.
2-79. Metal Lifeboats. Deterioration is probably the most common single defect found in lifeboats. Deterioration is
usually caused from corrosion, electrolysis, rubbing, chafing, aging and/or in- adequate maintenance. Past experience
indicates that deterioration in metal lifeboats will most likely occur in:
a. Flat sections of garboard strake along both sides of the keel.
b. Sheer strake areas adjacent to wood gunwales, where fitted.
c.
Shell plating in way of penetrations and fittings, such as drain plug, cradle pads, nameplate, etc.
d. Rivets.
It should not be construed that the foregoing are the only places where deterioration may occur. All surfaces of
the boat should be inspected and tested as found necessary. In most instances, the air tanks and floor boards should be
removed so as to make all portions of the hull accessible.
2-80. Hammer Test. There are no fixed rules concerning when and where hammer testing should be used. However,
it is suggested that only those areas indicating deterioration should be hammer tested and that the testing be accom-
plished with the blue end of any hammer used. The pointed end of the hammer should be reserved for probing to deter-
mine the extend of deterioration in plating previously found to be defective. Normally, the condition of a plate can be
deter- mined by lightly striking the plate with the flat end of the hammer. If the plate responds with a clear ringing sound,
it should be in good condition. If the hammer response is in the form of a "dull thud", the plated is probably in poor con-
dition and a more thorough examination should be made.
2-39
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