Herman Walman and Joris Block on 17August 1653

I wondered if Witte de With's journal would mention both HermanWalman and Joris Block at the same time. On 17 August 1653 (pages 159 and 160), there is a listing of the fleet that includes both of them:

Adm   Ship             Guns  Crew  Commander
A     Hollandsche Tuin 24     97   Joris Block
A-Dir Hollandsche Tuin 36    140   Herman Walman

Sources:

1. C. T. Atkinson, Ed., The First Dutch War, Vol.V, 1912
2. Johan E. Elias, Schetsen uit de geschiedenis van ons zeewezen, Vol.V, 1928
3. Witte de With, journals from 1652 to 1658, Archive E8812 from the Riksarkivet, Stockholm