100. Prior to the issue of Pistol Rocket Signal Mk 1, Comet, small quantities of Submarine Rocket Signal, Singel Star, shown in Fig.62, were issued and may be still available at va-rious Naval Ammunition Depots. They are no longer authorized for issue to submarines. They are similar in operation to Pistol Rocket Signal Mk 1, Comet, except that the star was suspended from a parachute. This signal is now designated as Pistol Rocket Signal Mk 1 Mod 1.