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 TB 55-1900-201-45/1
SECTION IX.
Special Instructions for Inspection of Landing Craft
2-27. Characteristics. Because of the abnormal construction features and use of landing craft more detailed inspection
is necessary. Landing craft are subject to more severe handling due to landings on beaches with severe surf conditions
which place severe strain on all welded joints and fittings. All voids should be thoroughly inspected for corrosion, mold,
water, and cracks. Through bulkhead fittings should be inspected to ensure they are intact. Wiring and piping should be
inspected for corrosion and leakage.
2-28. Engine Mountings. Engine mountings should be inspected to ensure they are intact and bolts are not broken or
stretched.
2-29. Tailshaft Runout. Tailshaft runout should be checked for runout and strut bearings checked for wear. A bent tail-
shaft can cause problems into the engine if not caught in time.
2-30. Well Deck. Well decks should be inspected for excessive wear and warping because of the varied and heavy pin-
point loading.
2-31. Ramps. Ramps are subject to severe stress, abnormal loading and both external and internal corrosion. Ramps
should be checked for warping. Ramp gaskets should be checked to ensure they are properly secured and complete.
Hinges and hinge pins should be inspected to ensure they are free and have no cracks.
2-32. Internal Corrosion. Internal corrosion of ramps is probably the insidious and difficult to detect without disman-
tling. When ramps are built they are preserved internally with the excess preservative drained. Nondestructive testing
and drill testing are the only means of determining ramp metal thickness. Hammer testing is only effective if the sur-
veyor is skilled in using it.
2-33. Hull Forward Section. The forward section of the underwater hull is subject to severe erosion of the metal be-
cause it takes the brunt of all landings and retractions and should be checked for wear every time the craft is out of the
water.
SECTION X. Deck Inspections
2-34. Inspection of Cargo Gear.
a. The term "Cargo Gear" includes masts, stays, booms, winches, cranes (barge), conveyors, standing and run-
ning gear forming that part of the shipboard cargo gear used in connection with loading and unloading of a vessel. This
term does not include material handling equipment.
b. A thorough examination of the assembled gear shall be made at least once each year. The "thorough exami-
nation" is a visual examination, by using organization and witnessed by the safety officer supplemented if necessary by
other means, as by a hammer
2-20
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