MIL-PRF-24758A (SH), PERFORMANCE SPECIFICATION CONDUIT SYSTEMS, FLEXIBLE, WEATHERPROOF (24 SEP 2004)., This specification covers the performance requirements for weatherproof flexible conduit systems (see 6.3.12) for use primarily in exposed areas (see 6.3.10) on U.S. Navy ships, to shield against electromagnetic (EM) radiation from own-ship transmitters and emissions external to the ship, electromagnetic pulse (EMP) (see 6.3.8) events, and to minimize corrosion (see 6.3.6) while being field repairable to reduce maintenance.