Dendrokronologisk Laboratorium

NNU rapport 47, 1999
- - 0090M001 0090M002
DENMARK Svendborg 4m000001 6.36 3.77
Jutland 9m456781 3.92 -
GERMANY Schleswig-Holstein dm100003 3.46 3.91
Hamburg dm100007 2.85 3.58
Lübeck dm100008 - 3.93
Lower Saxony dm200005 3.38 -
West Germany dm300001 - 3.15
ENGLAND All England gbm00002 3.51 3.45
N. England/Wales gbm00008 4.09 2.98
POLAND Elblag pm000007 3.66 3.38
ART-HISTORICAL 0m010001 3.85 2.78
0m020001 - 4.69
SWEDEN SV Skania sm000001 3.55 -
Mid Sweden sm600001 5.11 2.76
Charbrowo 1, Polen. Skema over synkroniseringsværdierne mellem trækurver 0090M001 og 0090M002 og diverse grundkurver for egetræ fra Nord Europa.

153 år, kun kerneved.
998-1150 e.Kr., efter ca. 1171 

162 år, kun kerneved.
1004-1165 e.Kr., efter ca. 1186 

137 år, kun kerneved.
1006-1142 e.Kr., efter ca. 1163 
stammer sandsynligvis fra samme træ som 0660032A 

181 år, heraf 4 år i splintved.
992-1172 e.Kr., ca. 1188 
stammer sandsynligvis fra samme træ som 0660034A 

140 år, kun kerneved.
1022-1161 e.Kr., efter ca. 1182 

132 år, kun kerneved.
998-1129 e.Kr., efter ca. 1150 

161 år, kun kerneved.
1008-1168 e.Kr., efter ca. 1189 

162 år, kun kerneved.
1008-1169 e.Kr., efter ca. 1190 

193 år, kun kerneved.
963-1155 e.Kr., efter ca. 1176 

148 år, kun kerneved.
1012-1159 e.Kr., efter ca. 1180 

Charbrowo 1 
67 år, kun kerneved.
1026-1092 e.Kr., efter ca. 1112 

Charbrowo 1 
91 år, kun kerneved.
1034-1124 e.Kr., efter ca. 1163 
stammer sandsynligvis fra samme træ som 00900039 

Charbrowo 1 
107 år, kun kerneved.
1021-1127 e.Kr., efter ca. 1147 

Charbrowo 1 
181 år, heraf 9 år i splintved.
997-1177 e.Kr., ca. 1188 
stammer sandsynligvis fra samme træ som 00900049 

Charbrowo 1 
77 år, kun kerneved.
1057-1133 e.Kr., efter ca. 1153 

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NNU report 47, 1999

The Centre for Maritime Archaeology at the National Museum of Denmark.
Submitted by George Indruszewski.
Examined by Niels Bonde, Aoife Daly, Orla Hylleberg Eriksen and Tomasz Wazny.
NNU A7948

Shipwreck, "Charbrowo 1"
The ship is a trader with pegged planking, with luting of moss and with a T-shaped keel (Crumlin-Pedersen, 1997).

The wreck was excavated in 1900. It was found about twenty kilometres south of the town of Leba, on the west bank of the Charnowsko canal, which lies south of Leba lake. It is now housed in the National Museum in Szczecin/Stettin (Indruszewski, see appendix).

15 samples of Quercus sp., oak were examined. Two of the samples had sapwood preserved. All the samples are dated.

This report describes ten samples from this analysis (samples whose numbers start with 0090) and five samples from an earlier analysis (Filipowiak, 1996) (samples which start with 06600).

Two samples (00900039 and 0660032A) are probably taken from the same plank and the curves are averaged to one (00901019) which represents that tree. Two other samples (00900049 and 0660034B) similarly are probably taken from the same plank and the curves are averaged to one (00901029), which represents this tree.

From the internal comparison of the curves from the samples (see table 1) the material can be divided into two groups. The curves can be averaged thus to two mean curves, 0090M001 and 0090M002. The curves from ten samples, which represent nine trees, are averaged to the mean curve 0090M001 of 207 years, which covers the period AD 963-1169. The curves from five samples, which represent four trees, are averaged to the mean curve 0090M002 of 186 years, which covers the period AD 992-1177.

Two of the samples, which come from one tree, have sapwood preserved. One of these has nine sapwood years but not bark edge. Adding 11 years, in that the normal sapwood width for Danish/Swedish trees is circa 20 years, the felling date for the tree, from which the samples come, is estimated to circa AD 1188. It is highly probable that the samples which have no sapwood preserved, were also felled around this time, that is circa AD 1188. This date can be taken as the date for the building of the ship.

Dendroprovenance ?
For the dating of the mean curves 0090M001 and 0090M002 master chronologies for oak from around the Baltic sea are used (see table 2). The mean curve 0090M001 cross-dates best with chronologies from mid Sweden and Svendborg, Denmark while 0090M002 cross-dates best with a chronology from art-historical material. However the t-values do not indicate the provenance of the trees.

Sapwood statistic Bonde upubl. 20 years +10/-5

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