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 TM 55-1905-223-10
a.
Dry Dock Underwater Area Inspection:
(1) Dry-dock underwater area inspection performed when the vessel is dry-docked. The
objective of the dry-dock underwater inspection is to determine the condition of the vessel underwater areas
and to determine the repairs and re-preservation required to make the vessel safe and seaworthy until the next
dry-docking; normally three years of operation after refloating.
(2). The dry-dock underwater inspection shall include all areas specified in Section 4 of the
applicable Appendix, Dry-Dock Underwater Area Inspection. Results of the dry-dock underwater inspection
shall be recorded on DA Form 5587-R Report of Dry-docking, Painting and Condition of Vessel Bottom, a copy
of which is included in Section 4. Note: This form does not specifically address the bow thruster or keel
coolers. Comments on keel cooler and underwater portion of the bow thruster shall be in the remarks section, if
applicable. The surveyor is responsible for completing this form.
b.
Diver Underwater Area Inspection:
WARNING: Follow safety lock out/tag out prior to diving operations on Army watercraft.
(1). The diver underwater area inspection is performed when the vessel is afloat. This
inspection is accomplished whenever possible as part of the interim inspection procedure. The objective of the
diver underwater inspection is to determine the condition of the underwater area, appendages and preservation
to determine required repairs and services, if any, to maintain the vessel in a safe fully seaworthy and mission
capable condition for an additional 18 month interval until the next scheduled dry-docking. In addition, this
inspection will identify repairs or services required which, if not acted upon, would lead to more extensive
deterioration and major repair expenditures. For example, major paint systems failures permitting excessive
corrosion or excessive zinc anode wastage which, if not renewed, might result in accelerated hull corrosion.
Zinc anodes deteriorated in excess of 50% of original volume shall be replaced.
(2). The diver underwater inspection shall include all areas specified in Section 5 of the
applicable Appendix, Diver Underwater Inspection Report,
c.
Ships drawings of the underwater body and appendages s all be provided the diver for
h
familiarization prior to conducting the inspection. If the diver is not qualified to evaluate conditions observed, a
closed circuit television with two way communication capable of being monitored by the surveyor shall be used.
9.
WORK -IN-PROCESS INSPECTIONS: There are two types of underwater area. Work-in-process
inspections are accomplished by the assigned ship surveyor while the vessel is in the contractor facility
(shipyard) undergoing repairs.
Change 8 G-5
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