Described as "one of the most valuable collections of maritime artifacts in the state", a treasure trove containing items, many brought back from far flung corners of the globe, all documenting the towns long association with the sea. Arklow's maritime history stretches back to the mists of pre-history. There is evidence to show that the 2nd century cartographer Ptolemy knew of its existence. In the 9th century the Vikings established the town and port on a permanent basis. The Normans consolidated its seafaring traditions. By the turn of the 20th century Arklow was Ireland's premier fishing port and had a fleet of 80 schooners, brigs and brigantines. To this day Arklow Shipping Ltd. has the largest fleet of vessels trading under the Irish flag and boat building still continues to be carried out by Arklow Marine Engineering Ltd. Until recently, wooden boats and ships were being constructed by John Tyrell & Sons Ltd., who designed and built Chichester's Gypsy Moth 3, the Irish sail vessel Asgard 2, numerous fishing vessels, trading vessels, pilot boats and many other types.