Cutwaters Before Rams: an experimental investigation into the origins and development of the waterline ram

Students at Stevens Institute of Technology (Hoboken, NJ, USA) investigated the reasons for an elongated projection at the bow of Mediterranean galleys. Using a 1:20 base model adapted from the Trireme Trust's Olympias fitted with: 1) an elongated projection; and 2) a control bow similar to excavated merchant ships, tow‐tank tests were carried out at various speeds. Hydrodynamic resistance and power were calculated for each bow type. Above speeds corresponding to 6 knots, the cutwater bow significantly attenuated the model's bow waves when compared to the control bow. These results were then compared to those of the ship with a ram‐type bow from experiments conducted in 1985 at the National Technical University of Athens, which showed similar wave‐attenuating characteristics.     

LATE GALLEYS: The Fredriksvern Naval Shipyard and the coastal defence in Norway 1750–1814

From the early 18th century the Mediterranean galley experienced a new golden age in the Baltic Sea, as it was well adapted to the shallow sea with the islands and skerries found there. In Norway the Fredriksvern naval shipyard was founded in 1750 to build a galley fleet. For various reasons progress was slow, and when the galley fleet finally was built in the 1760s, it was probably the last one in Europe. New and more efficient inshore vessels were soon developed in the neighbouring countries, but they were not put into use in Norway in the 18th century. The explanation for Norway’s poor performance was probably too much peace: when Denmark-Norway became involved in the Napoleonic Wars, naval development was dramatically improved.     

16th-Century Ship Graffiti on the Town Walls of Eivissa, Balearic Islands, Spain

Among the historical ship depictions in Eivissa (Balearic Islands, Spain), the graffiti of galleys on the Renaissance city walls are of particular interest. From archival documents the building sequences of this monument can be confirmed. Thus the galley graffiti on the eastern side of the bastion of Sant Bernat can be narrowed down chronologically to slightly after 1568. These graffiti are also interpreted from the social history point of view, in the light of ongoing corsair incursions during the 16th century.
© 2009 The Author     

Eight Byzantine Shipwrecks from the Theodosian Harbour Excavations at Yenikapı in Istanbul,Turkey: an introduction

Excavations at Yenikap? in Istanbul, Turkey, related to the Marmaray Project, have unearthed remains of Constantinople's Theodosian Harbour, including 37 Byzantine shipwrecks of 5th‐ to 11th‐century date. Eight of these shipwrecks, six round ships and two of the first long ships, or galleys, to be excavated from the Byzantine period, were studied by archaeologists from the Institute of Nautical Archaeology. These well‐preserved shipwrecks are an important new source of information on the maritime commerce of Constantinople and the gradual shift from shell‐based to skeleton‐based shipbuilding in the Mediterranean during the second half of the first millennium AD.