Dendrokronologisk Laboratorium


NNU rapport 45, 1999
 
0089m001 0089m002
DENMARK Jutland 9m456781 5,61 4,40
GERMANY Schleswig-Holstein dm100003 6,97 6,51
Lübeck dm100008 6,86 5,78
Lower Saxony dm200002 4,71 2,50
Weser dm200004 2,57 3,17
South Germany dm700001 3,67 4,07
POLAND Wolin pm000005 4,75 3,20
Gdask Ratusz p670400m 4,69 4,27
Puck Zatoka p672001m 3,76 3,50
Gniezno p720002m 4,06 4,58
SWEDEN SW Scania sm000001 4,37 5,02
Lund Scania Blekinge sm000002 6,92 5,87
Szczecin, Polen. Skema over synkroniseringsværdierne mellem trækurver 0089M001 og 0089M002 og diverse grundkurver for egetræ fra Nord Europa.

Katalog
0089001A 
Planke 0101-0201 
179 år, kun kerneved.
713-891 e.Kr., efter ca. 911 
stammer sandsynligvis fra samme træ som 0694316B 

0089002A 
Planke 0101-0203 
171 år, kun kerneved.
650-820 e.Kr., efter ca. 840 

0089003A 
Planke 0101-0204 
158 år, kun kerneved.
648-805 e.Kr., efter ca. 825 

00890049 
Planke 0102-0301 
55 år, kun kerneved.
Ikke dateret. 

0089005A 
Planke 0102-0303 
246 år, kun kerneved.
641-886 e.Kr., efter ca. 906

00890069 
Planke 0103-0401 
91 år, kun kerneved.
798-888 e.Kr., efter ca. 908 
 

00890079 
Planke 0103-0402 
253 år, kun kerneved.
591-843 e.Kr., efter ca. 863 
stammer sandsynligvis fra samme træ som 00890089 og 0694315A 

00890089 
Planke 0105-0504 
170 år, kun kerneved.
654-823 e.Kr., efter ca. 863 
stammer sandsynligvis fra samme træ som 00890079 og 0694315A 

0089009A 
Planke 0202-0302 
138 år, kun kerneved.
650-787 e.Kr., efter ca. 807 

0089010A 
Planke 0203-0403 
146 år, kun kerneved.
653-798 e.Kr., efter ca. 818 

0694315A 
Szczecin 
169 år, kun kerneved.
655-823 e.Kr., efter ca. 863 
stammer sandsynligvis fra samme træ som 00890079 og 00890089 

0694316B 
Szczecin 
149 år, kun kerneved.
736-884 e.Kr., efter ca. 911 
stammer sandsynligvis fra samme træ som 0089001A 



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NNU report 45, 1999
SZCZECIN, POLAND

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 j.nr. A7946

Shipwreck
The ship is under 9 metres long, with pegged planking, with luting of moss and with a U-shaped keel (Crumlin-Pedersen, 1997).

The ship was found and excavated in 1962. It was found on the shore of the Oder river, near the medieval castle in Szczecin. It is today housed in the National Museum in Szczecin/Stettin (Indruszewski, see appendix).

12 samples of Quercus sp., oak were examined. None of the samples had sapwood preserved. 11 samples are dated.

The samples were collected in two phases, ten were taken for this analysis (names starting with 0089), and two are from an earlier analysis (Filipowiak, 1996) (samples whose names start with 06943).

The analysis shows that three samples (00890079, 00890089 and 0694315A) probably come from the same tree, and these curves are averaged to one (00891019), which represents the tree. Similarly, two other samples (0089001A and 0694316B) probably come from a single tree, and the curves are averaged to one (00891029), which represents this tree.

From the internal comparison of the curves from the samples (see table 1) and from the dating results (see fig. 1) the material can be divided into two groups. The curves from the samples are thus averaged to form two mean curves, 0089M001 and 0089M002.

Building phase
Curves from seven samples, which represent five trees, are averaged to the mean curve 0089M001 of 253 years, which covers the period AD 591-843.

No sapwood is preserved on the seven samples which belong to the ship's building phase. Allowing for missing sapwood, in that normal sapwood width for north German/south Swedish trees is circa 20 years, the felling date for the trees from which the samples come, is estimated to after circa AD 863. This date can be taken as the date for the building of the ship.

Repair phase
The curves from four samples which represent three trees, are averaged to the mean curve 0089M002 of 251 years, which covers the period AD 641-891.

There is, similarly, no sapwood preserved on the four samples which belong to repair of the ship. When again correcting for missing sapwood, the felling date for the trees from which the samples come, is estimated to after circa AD 911. This date can be taken as the date for the repair of the ship.

Dendroprovenance?
In dating the mean curves 0089M001 and 0089M002 master chronologies for oak from around the Baltic sea are used (see table 2). The mean curves cross-date with chronologies from southern Sweden and North Germany, but the t-values do not indicate the provenance for the trees, from which the samples come.

Sapwood statistic Bonde upubl.; c. 20 +10/-5


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