Visually check the anchor for casting irregularities, cracks, or obvious
mechanical damage. On STATO, NAVMOOR, and other welded anchors,
all welds should be checked for cracks, fissures, corrosion, or other
defects. If present, stabilizers and their attachment points should be
inspected for cracks or other signs of weakness.
Conduct a hammer test to determine if there are any invisible cracks or
other abnormalities. To accomplish this test, a crane is required to lift the
anchor off the ground by its anchor shackle. The palm of each fluke is
then struck with a 5-pound (or larger size) hammer. A ringing tone
indicates that there are no abnormalities in the structure of the fluke. A
dull "thump" indicates that the fluke structure contains serious cracks or
The results of the above preliminary inspection measurements, observations,
and tests should be documented. If the inspected anchor is determined to be in
satisfactory condition as a result of this inspection, no further effort will be
expended, and the anchor will be made ready for further use or placed in a
designated storage area.
7.2.3 DETAILED INSPECTION. This inspection will be conducted only if, as a result of
the preliminary inspection, abnormalities are suspected or if the condition of the
anchor is questionable. The detailed inspection will include the following:
Clean anchor by sandblasting to near white metal.
Visually inspect anchor for cracks or casting irregularities. Pay particular
attention to anchor flukes and welds.
Perform a liquid dye penetrant or magnetic particle test on any
suspected cracks or abnormalities in accordance with MIL-STD-271, "Non-
Destructive Testing Requirements for Metals."