GENERAL The aim of ATP-57.1 is to provide the operator without a robust background@ with the necessary information to approach and gather knowledge on how Submarine Rescue Operations or exercises are conducted. The ATP-57 philosophies for submarine rescue are to provide a reasonable level of insurance for the more likely accident situations and some@ at least@ for the less likely. While rescue is the preferred method of saving life after a submarine accident@ escape is just as likely even though it presents greater risks to the individual. Salvage of the whole submarine is not considered here as a means of saving lives@ as it would invariably take far too long to accomplish even in favourable circumstances. Some salvage related activities may@ however@ contribute towards escape or rescue. Indications on other relevant reference documentation can be found at ATP-57 Chapter 1.