Ron van Maanen has the details of the Friesland ship Postiljon van Smyrna, which was assigned to Auke Stellingwerf's squadron at the Battle of Lowestoft. The ship was commanded by Barend Hiddes de Vries. These are the details:
The ship Postiljon van Smyrna, Capt. Barend Hiddes de Vries
Length from stem to sternpost: 118ft
Beam: 29ft
Hold: 12ft
Height between decks: 6ft
40 guns
Crew: 205 men
Sources:
- Frank Fox, A Distant Storm: the Four Days' Battle of 1666, 1996
- Ron van Maanen, unpublished manuscript "Dutch Warships 1600-1800", undated, but circa 1992