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Дата 22.04.2015 13:08:10 Найти в дереве
Рубрики 11-19 век; Флот; Версия для печати

Тупо Вики про Балтику и Адама:

the first to name it the Baltic Sea (Mare Balticum) was the eleventh-century German chronicler Adam of Bremen. The origin of the latter name is speculative. ... Adam of Bremen himself compared the sea with a belt, stating that it is so named because it stretches through the land as a belt (Balticus, eo quod in modum baltei longo tractu per Scithicas regiones tendatur usque in Greciam). He might also have been influenced by the name of a legendary island mentioned in the Natural History of Pliny the Elder.

Т.е. хотя бы версию про пояс стоит добавить (Бельты тогда отсюда же).