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 TB 55-1900-201-45/1
2-89. Lowering Speed. It is intended that the terminal speed of a fully equipped lifeboat without passengers exceed
the minimum speed of 40 feet per minute and that the terminal speed of the same lifeboat fully equipped with weights
equivalent to a full complement of passengers should not exceed a maximum speed of 120 feet per minute. Lifeboat
tests shall not be conducted if the required davit span life lines or other suitable safety lines are not rigged.
2-90. Life Boat Equipment. All equipment in the life boat shall be inspected and tested if necessary. The equipment
for life boats will vary, depending upon the mission of the vessel. The expiration dates of pyrotechnic signals and emer-
gency drinking water should be examined and the items renewed if outdated. The amount of emergency rations, drinking
water and condensed milk shall be noted and the containers examined for deterioration. Flashlight batteries should be
renewed yearly. The condition of rowlocks, hatchets, lifelines and other required equipment should be inspected and re-
newal made if necessary. The bilge pump should be examined and tested for proper operation.
2-91. Lifeboat Repair. The following general procedures should be followed as much as possible to qualify a dam-
aged or deteriorated metal lifeboat as an acceptable repaired or overhauled lifeboat.
a. All former temporary or unsatisfactory repairs shall be removed and satisfactory permanent repairs made.
b. All deteriorated parts or equipment required to be in the lifeboat shall be satisfactorily repaired or replaced.
c. Normally the use of patches for lifeboat repairs should be discouraged; however, there are a few exceptions
when they may be permitted. These are mechanical damage such as punctures and localized deteriorated areas in way
of nameplates and drain plugs, etc. In these cases a 6" to 8" circular or square patch with rounded corners may be used
as a permanent repair. Riveting and lapping of the patch should be as for plate seams.
d. Areas of deteriorated or damaged plating may be repaired by cropping the plate to good metal the full width
of the strake. Where cropped plates are used, butt seams shall be staggered from those in adjacent strakes.
e. Large areas of deteriorated or damaged plating shall be repaired by renewing the plate.
f. Cropped or replacement plates should be riveted as per original construction. Huck commercial Lockbolts
may be used in lieu of rivets. Due to the close fit of the air tanks to the hull on some boats, care should be taken to in-
sure that the Huck bolt ferrule does not rub against the air tanks.
2-42
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