In general, painting requirements are the same for torpedo impulse tanks as for other tanks, with the exception that non-ferrous and corrosion-resistant steel piping in these tanks should remain unpainted. These tanks are subject to high air pressures. SSN 688 class submarines preferred coating is MIL-DTL-24441 Type IV or MIL-PRF-23236 Type V or VI, Class 7 while SSBN/SSGN class submarines only allows MIL-PRF-23236 TY VII Class 7/18 single coat application in the torpedo impulse tanks.
To ensure proper coating adhesion, special attention should be paid to surface preparation of this area. All surface preparation work must be accomplished in accordance with NAVSEA Standard Item (NSI) 009-32 and the Submarine Maintenance Standard (SMS) 6310-081-015 – Submarine Preservation.
For depot repairs, refer to SMS 6310-081-015 and NSI 009-32. NSI 009-32 is the governing document for preservation requirements.
Torpedo impulse tanks are usually not entered by submariners between availabilities but if they need to enter for any reason, Naval Ships’ Technical Manual: Chapter 631 (NSTM 631), Preservation of Ships in Service – General provides requirements, instructions, and guidance for surface preparation and coating application.
New construction submarines are painted in accordance with the submarine build specification for that class of submarine.
SUBMEPP Point of Contact
SUBMEPP provides centralized life-cycle maintenance solutions and support for U.S. Navy submarines and submersibles. SUBMEPP is under the Submarine Directorate of the Naval Sea Systems Command (NAVSEA).
NAVSEA Point of Contact
The Naval Sea Systems Command (NAVSEA 05) is the technical authority for in-service submarine preservation-related work.
Naval Sea Systems Command, SEA 05