Marine signal flag: Letter "N" (November) Irish Sea and St. George's Channel as should emergency telephones and

as should emergency telephones and emergency stop buttons

British Admiralty Nautical Chart 3045: Approaches to Vladivostok is a standard nautical chart

NOAA Nautical Chart 13315: Deer Island Thorofare and Casco Passage is a standard navigation chart used by commercial and recreational mariners alike

and subsequent amendments in force

2001 Edition which includes Guidelines for the development of Shipboard Oil Pollution Emergency Plans (SOPEP) (Resolution MEPC

Marine signal flag: Letter "N" (November) Irish Sea and St. George's Channel as should emergency telephones andInternational maritime signal message: "No" or "Negative" Marine signal flags are international signals used by ships at sea to spell out short messages, or more commonly, used individually or in combination they have special meanings.