Fredrik Hjalmar Adelborg (18 October 1886 – 21 September 1948) was a Swedish diplomat, director, explorer, donor and author.
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Early life
Adelborg was born on 18 October 1886 at Öster-Malma Castle in Ludgo, Södermanland County, Sweden, the son of Captain Otto Adelborg and Baroness Jacquette De Geer. He was the brother of Gustaf-Otto Adelborg and Louise Adelborg.
Career
Adelborg was a sea cadet and attended the Royal Swedish Naval Academy from 1901 to 1903 and served in the Merchant Navy and carried out two complete global circumnavigations. He completed mate's examination and an examination in steam engine teaching at Stockholm Navigation School in 1907. He became a reserve under-lieutenant in the Swedish Navy in 1908 and was secretary to the vice consul at the Swedish consulate in Bristol from 1908 to 1909.