- published: 11 Apr 2015
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A ship prefix is a combination of letters, usually abbreviations, used in front of the name of a civilian or naval ship.
Prefixes for civilian vessels may either identify the type of propulsion, such as "SS" for steamship, or purpose, such as "RV" for research vessel. Civilian prefixes are often used inconsistently, and frequently not at all. Sometimes a slash is used to separate the letters, as in "M/S".
Naval prefixes came into use as abbreviations for longer titles, such as "His/Her Majesty's Ship" in the Royal Navy, abbreviated "H.M.S." and then "HMS". Earlier uses often included the type of vessel, as for instance "U.S.F." ("United States Frigate") for frigates of the United States Navy. Today the common practice is to use a single prefix for all warships of a nation's navy, and other prefixes for auxiliaries and ships of allied services, such as coast guards.
The use of ship prefixes is not universal; in particular neither the Third Reich's Kriegsmarine nor the Imperial Japanese Navy used ship prefixes. Some English-language writers use prefixes like "DKM" (for "Deutsche Kriegsmarine") and "HIJMS" (for "His Imperial Japanese Majesty's Ship") or "IJN" (for "Imperial Japanese Navy", a translation of 大日本帝国海軍 dai-nippon teikoku kaigun) for consistency with "HMS" and "USS". Other writers follow the practice of the navy and omit any prefix.
Birger Jarl (help·info) (c. 1200 – 21 October 1266), or Birger Magnusson, was a Swedish statesman, Jarl of Sweden and a member of the House of Bjelbo, who played a pivotal role in the consolidation of Sweden. Birger also led the Second Swedish Crusade, which established Swedish rule in Finland. Additionally, he is traditionally attributed to have founded the Swedish capital, Stockholm around 1250. Birger used the Latin title of Dux Sweorum which in English equals Duke of Sweden, and the design of his coronet combined those used by continental European and English dukes.
It is known that Birger grew up and spent his adolescence in Bjälbo, Östergötland but the exact date of his birth remains uncertain and available historical sources are contradictory. Examinations of his mortal remains indicate that he was probably about 50 upon his death in 1266 which would indicate a birth around 1216. However, his father Magnus Minnesköld is assumed to have died no later than 1210, which would lead to an assumed birth a few years earlier. Under any circumstance, he was the son of Ingrid Ylva, who according to Olaus Petri was a daughter of Sune Sik and granddaughter to Sverker the Elder, which would make Birger a matrilineal member of the House of Sverker. His brothers or half-brothers — Eskil, Karl, and Bengt — were all born long before 1200, and it can therefore be assumed that they had another mother. He was also a nephew of the jarl Birger Brosa from the House of Bjelbo. The combination of this background proved to be of vital importance.