94. Under consideration by the Bureau is the possibility of using ships emergency identi-fication signals on board submarines as a substitute for Submarine Identification Flares Mk 10 and Mods. A quantity of ships emergency identification signals, as described in pa-ragraph 27, has been made available for use for submarines in an attempt to determine whether this type of singal will result in improved recognition communications between submarine and friendly aircraft. The standard Ships Emergency Identification Signal Mk 1, as descriped in paragraph 27a, is being issued for this purpose with the additior of a YEL-LOW colored signal, as will be seen in paragraph 27a. Standard Ships Emergency Inden-tification Signal Mk 1 Mod 0 includes only RED, WHITE, and GREEN. For submarine purpo-ses, RED, GREEN, and YELLOW signals will be available. The signals will be fired in the usual manner from the Ship's Projector Mk 1 Mod 0 as described in paragraph 32. Singals of this type for use from submarines are being given only limited distribution and, is satis-factory, will be issed universally as a supplement to the Submarine Identification Flare Mk 10 and Mods.