The Dutch squadron on 15 September 1639

Thanks to Mr. Carl Stapel, we have a list of ships that fought in the Battle of the Downs:

Squadron of M.H. Tromp

Adm Ship              Guns Crew Rank       Commander
M   Aemilia           57   240  Lt-Admiral M.H. Tromp
M   Gelderland        34   120  Captain    Willem van Coulster
A   Frederik Hendrik  36   120  Captain    Pieter.Pietersz de Wint 
N   Sampson           32   120  Captain    Claesz Cornelisz Ham
N   Hollandse Tuin    32   120  Captain    L. Ysbrantsz Halffhoorn
    Deventer          28   110  Captain    Robert Post
    Omlandia          28    80  Captain    J. Gerbrandsz
    ?                 32   110  Captain    C. Ringhelsz
WIC Salamander        40   110  Capitein   L. Pz Bachuysen
N   Grote Christoffel 28    90  Captain    Frederick Pieterszoon
    Gideon            24   100  Captain    Hendrik. Jansz. Camp
    ?                 28   105  Captain    J. Paulusz

Squadron of Witte de With

Adm Ship                Guns Crew Rank          Commander
M   Maegd van Dordrecht 42   140  Vice-Admiral  Witte de With
A   Overijsel           24   100  Captain       Jacques Forant
A   Utrecht             30   120  Captain       Gerrit Meyndertsz den Uyl
    Sint Laurens        32    90  Captain       A. Dommertsz
A   Bommel              28    80  Captain       Sybrant Barentsz Waterdrincker

Squadron of Joost Banckert

Adm Ship                Guns Crew Rank          Commander
Z   Wapen van Zeeland   28   110  S B N         Joost Banckert
Z   Zeeridder           34   120  Captain       Frans Jansz. van Vlissingen
A   Zutphen             28   110  Captain       Joris van Cats
A   Walcheren           28   110  Captain       Jan Teunisz Sluys
N   Wapen van Holland   39   120  Captain       Lieve Cornelisz de Zeeuw
N   Neptunus            33   100  Captain       Albert 't Jonge Hoen
A   Amsterdam           10    60  Captain       Pieter Barentsz Dorrevelt
    Drenthe (jacht)     16    60  Captain       Gerrit Veen
F   Rotterdam           10    70  Captain       Joris Pietersz. van den Broeck