The Dolphin Code
Known internationally as THE FIRST CANADIAN SUBMARINE SQUADRON'S (IN)FAMOUS DOLPHIN CODE - A Souvenir of Association With Travellers in Tubular Steel Who Do It Better, this code originated aboard HMCS Okanagan in July, 1976. It represents the culmination of months of effort by that submarine's officers under the command of Lieutenant Commander Keith Nesbit.
Designed primarily to facilitate communication between Canadian conventional submarines and those units/authorities with and under whom they operated, the code was somewhat imitative of the aviators' widely known FALCON CODE. Being more gentlemanly in tone than the latter, however, the DOLPHIN CODE was more acceptable to those many military minds for whom uncouthness was unethical.
The DOLPHIN CODE has earned a solid international reputation, and is now well known within Western Submarine navies. It has even been rumoured that the late Soviet Naval Air Force used the code on occasion. The Royal Australian Navy additions were added in 1997 and serve to attest to the popularity of the DOLPHIN CODE.