The Finnish sailing ship “Aimo”

The full-rigged sailing ship "Aimo" was built at Åbo shipyard in 1865-66. In 1882 she was rerigged in Sharpness into a bark.

In a snow storm in the middle of December 1898 the Finnish sailing ship "Aimo" failed in a tacking maneuver and sailed straight into the archipelago outside Nämdö and stranded on the skerries "Vitkobbarna". With the two ship's boats, the whole crew got safely to the nearby island of Rågskär. Eighteen soaking wet men doing a surprise visit in the early evening at the crofter's cottage!
The ship could not be saved. It was sold and the wood was used for building houses. Later the left-overs of the ship was used as an artillery target by the Swedish navy.

Tacking, a maneuver by which a sailing boat turns its bow through the wind (Wikipedia)

A four inch "slice" of the 8 by 11 inches thick stock.

At Långholmen, an island close to Runmarö (North of Nämdö), tradition says that part of a pier and part of a barn came from the Aimo ship.
This "slice" has been ground to allow for a dendrochronological analysis. Several radii have been measured (Aimo.rwl) and a mean value of that was analysed.

Litterature (in Swedish):
Skärgårdsmuseets tidskrift Skärgård nr 19 Nov 1979, artikeln "Aimo" av Allan Gustafsson.
Om förlisningen, se Maj-Britt Eriksson, Notvarp i Nämdö 1979 eller ovanstående nummer av tidskriften.

The analysis was done with a collection of 37 members, each representing a mean value curve (in .d12 or .wid format) from an area in Sweden, Norway, Denmark, Estonia and Finland. The presumed Aimo sample was selected as the reference in CDendro and the command Test Towards UNDATED reference was run from the collection and "With condensed report" checked:
The best matching results list like this:

                  T-    Over 
           Corr   Test   lap  Year 
all...     0.31   3.51   121   302   based on 37 members 
3EP281AV   0.50   6.24   121  1792   Estonia Est002 (EXTRATERR) 
BratPIr    0.43   4.92   107  1792   Mälardalen (Bråthen), questionable segments removed 
NKarelia   0.37   4.29   121  1690   North Karelia, Finland 
se_005Go   0.35   4.10   121  1792   Gotland, Lunds univ. (EXTRATERR) 
EXFin002   0.35   4.06   121  1769   Fin002 N.Finland (EXTRATERR) 
gud14      0.49   4.00    54  2017   Gudbrandsdalen, Norway 
SE006-La   0.34   3.98   121  1769   Lappland, Lund (EXTRATERR) 
East Sve   0.34   3.91   121  1792   East Svealand Aneby+Askersu+Bettna+Sissham+Saltsjöba 
NFinland   0.34   3.91   121  1769   Northern Finland 
swed304S   0.33   3.88   121  1792   Tyresö, Sisshammar (SE Stockholm 5913 1821) Andreason PISY 1661-1910 
Year numbers occurring more than once: 
 1792   11 
 1769    3 
 1824    2 
 1913    2 
 1921    2 
 2010    2

With the presumed Aimo sample provisionally dated to 1792 the matching of each member to that year ("Test towards (dated!) reference") could be analysed. With then only the best eigth members selected, I got: ... with corr >= 0.30 and with overlap >= 107 Results sorted according to decreasing correlation coefficient values.

                   T-  Over 
           Corr   Test   lap 
all...     0.45   5.47   121   based on 8 members 
3EP281AV   0.50   6.23   121   Estonia Est002 (EXTRATERR) (1516-1998) 
BratPIr    0.43   4.91   107   Mälardalen (Bråthen), questionable segments removed (1153-1904) 
se_005Go   0.35   4.10   121   Gotland, Lunds univ. (EXTRATERR) (1125-1987) 
East Sve   0.34   3.90   121   East Svealand Aneby+Askersu+Bettna+Sissham+Saltsjöba (1662-2005) 
swed304S   0.33   3.88   121   Tyresö, Sisshammar (SE Stockholm 5913 1821) Andreason PISY 1661-1910 (1661-1910) 
SödraDal   0.32   3.63   121   SDalar 1 Södra Dalarna      PISY (1362-2005) 
DALARNA    0.30   3.49   121   Dalarna, Lunds universitet (EXTRATERR) (932-1888) 
NMVKMEAS   0.30   3.44   120   Kaptensudden (ITRDB:swed303), unknown origin in Stockholm area (1672-1870)

I.e. the best T-value is 6.2 towards the reference from Estonia at year 1792. That is a quite certain dating of the outermost ring of the stock.

The "Aimo" was built in Åbo and launched in 1866. If this stock is a part from "Aimo" - which we have good reasons to presume - some 70 rings of sapwood have been cut away as the outermost ring of this "slice" grew in 1792.