In Oegstgeest nine fragments of shipwood have been found. These fragments had two pin holes in it diagonally. This is typical for a logboat with clinkerbuilt extended board.

It seems that multiple plank fragments were part of a logboat. Another fragment had an alder wood pen with a striking trapezoidal head. This pen type is know from Slavic shipbuilding tradition.

Dendrochronological research has revealed that at least part of the wood was from the German Rhineland dated approximately 653 AD.

• W. Jezeer, (red.) ADC rapport 2054, Een Merovingische nederzetting aan de monding van de Rijn , Amersfoort 2011.