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 TB 55-1900-231-15
CHAPTER VI
RE PRESERVATION
1. INTRODUCTION:
When watercraft are activated, represervation is required. Represervation requires limited operations of
machinery and therefore, must be accomplished before the watercraft are returned to dry storage on the HLPS
vessel. The amount of represervation required, depends entirely upon the extent of depreservation/activation.
A. The manhour requirements for represervation will not be appreciably different from initial preservation;
however, the materiel requirements may be considerably less: (1) There will be a cost savings by reusing
the PVC piping, flex hoses, sensing elements, humidistats, plywood blanks and herculite covers.
(2) Antifreeze in the fresh water cooling systems will require replenishment only. Solution must be
checked for PH range. Proper range is PH 8 to PW 9.5 Test Kit, Diesel Engine NSN 6630-00-316-
5831 is authorized in Basic Issue Items for this purpose.
(3) Engine fuel system will require preservation (4) Essentially the represervation shall follow pertinent
instructions set forth in Chapter m and Appendices A through E.
(5) Represervation materiels are estimated in paragraph 2, 3, 4 and 5 below and will be provided for by
the maintenance facility.
(6) Drydocking for underwater hull cleaning and painting should not be required if all underwater
surfaces are washed down with fresh water to remove accumulated marine growth and slime. This
can be accomplished with the fire hose; however, care should be taken to assure that the paint
system is not damaged during wash down.
(7) Dry docking may be required for repairs to hull or paint system.
(8) Specialized equipment will not require replacement.
(9) The lubricating oil storage tanks may need replenishment.
(10) On completion of represervation requirements prepare DA Form 3256, "Preservation and
Depreservation Guide for Marine Equipment" in accordance with Chapter III, Paragraph J (2) and
Figure III-3, 3A, 3B and 3C. Annotate DA Form 2409, "Maintenance Inspection Record" to reflect the
date when represervation was completed.
45/(46 blank)
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