Scheepswerf en Machinefabriek Akerboom
Leiden, Netherlands
www.ayeholland.nl 
Founded in Lisse in 1860, moving to Oegstgeest (later part of Leiden) in 1928. Acquired by De Vries Scheepsbouw in 1986.
Eurowerken
Yd No. 175
Breesem
Yd No. 439
Havendienst 2
Yd No. 584