To be or not to be a cog: the Bremen Cog in perspective

In 2000, a well‐preserved, c.21 m‐long shipwreck, Doel 1, was found upside‐down in a silted‐up creek near the river Scheldt (Belgium). An interdisciplinary research project was initiated, including 3D registration of all timbers, wood species identification, dendrochronology and archaeobotanical analysis of the caulking material. Doel 1, of which 70% is preserved, displays the construction features of a cog. Unseasoned wood was used and dated by dendrochronology to AD 1325/26. Remarkable features include the symmetrical layout of the bottom planks, the atypical arrangement of the frames to the fore, and evidence of partial dissassembly of the ship after intensive use.

Section: Discussionmentioning

confidence: 59%

mentioning

confidence: 99%

Construction Features ofDoel 1, a 14th‐Century Cog found in Flanders

Vermeersch

Haneca

2014

“…As described in this paper, the Mollö cog has for different reasons mostly been ascribed to the 13th century. Contemporary finds include cogs from Bremen ( c .1380, Bauch, 1969), Skanör (after 1382, Ossowski et al ., 2003; Nilsson, 2004), Lille Kregme ( c .1358, Eriksen, 1992), Flevoland NZ 42 (1350–1400, Crumlin‐Pedersen, 2000: 237, table 1), Vejby (winter 1372, Bonde and Jensen, 1995) and Noordoostpolder M 107 (1375–1400, Crumlin‐Pedersen, 2000: 237, table 1). From a technological perspective, the result of the dendrochronological investigation is perhaps not that surprising.…”

Section: Discussionmentioning

confidence: 99%

The Mollö Cog Re-Examined and Re-Evaluated

Arbin¹,

Daly²

2012

As part of a research project on medieval trade and maritime transportation in the former Norwegian province of Bohuslän, western Sweden, a dendrochronological analysis of the so‐called Mollö cog was undertaken. The wreck, which was first salvaged in 1980, was previously dated by 14C analysis. Since this provided a nearly 400‐year time‐span for the building of the vessel, a more precise dating was considered essential. In conjunction with dendrochronological sampling, several features not previously reported were recorded. This paper presents the find, the research history and the results of the dendrochronological investigation. © 2012 The Authors

“…The name IJsselcog refers to a 15th‐century shipwreck excavated in the riverbed of the IJssel and raised on 10 February 2016. In this article the term ‘cog’ or ‘cog‐like cargo vessel’ is used as an archaeological term according to Crumlin‐Pedersen's definition (: 239–240). The river itself branches off the river Rhine east of Arnhem and subsequently flows northward (Fig.…”

mentioning

confidence: 99%

The IJsselcog project: from excavation to 3D reconstruction

Waldus¹,

Verweij²,

Velde³

et al. 2019

The 15th‐century IJsselcog was lifted in 2016 from the river IJssel near Kampen (the Netherlands). From stern to bow and from starboard to portside about 70% of the original wooden hull is preserved. The combined approach of analogue documentation and photogrammetry enabled the research team to reconstruct the original ship in 2D and 3D, followed by a comprehensive study of its nautical characteristics. The hull volume and height were maximized by the shipbuilders using previously unknown construction elements in cogs, such as wales and vertical riders; shipbuilding traits that are generally applied to 16th‐ and 17th‐century carvel‐built cargo ships.