Uldrich de Jager and Dirck Jansz Soomer

So, which ships, exactly, did former luitenants Uldrich de Jager and Dirck Jans Soomer (or Somer) command? I have some information from early 1652 that shows that Ulrich (or Uldenich or Uldrich) Claesz de Jager was the luitenant of Hector Bardesius on the Amsterdam Directors' ship Gideon van Sardam. That some document shows that Dirck Jansz Soomer was luitenant of Lambert Pieterszoon's ship Nassouw (or Nassouw van den Burgh, later just called the Burgh). This document is really good, as luitenants that we later hear about include:

Ship              Captain                   Lieutenant
Blauwen Arent     Dirck Pater               Hendrick Hendricksz Heij
Gideon van Sardam Hector Bardesius          Ulrich de Jager
Valck             Cornelis Jansz Brouwer    Bartholomeus Rietbeeck
Elias             Jacob Sievertsz Spanheijm Frans Fransz Sluijter
Nassouw           Lambert Pieterszoon       Dirck Jansz Somer
Engel Gabriel     Bastiaen Bardoel          Cornelis Cornelisz Jol
Vergulde Fortuijn Fredrick de Coninck       Dirck Hendricksz Vogelsang