The First Dutch War, Vol.V: "Jan Eckersen"

On page 135 of The First Dutch War, Vol.V, in the excerpt from Michiel De Ruyter's Journal for 6 June 1653, he mentions sending an advice-yacht to Cape Gris-Nez, "directing" "Jan Eckersen", Lambert Bartelszoon, and Cornelis Evertsen de Jonge "to join the fleet". At first, I could not tell who was meant by "Jan Eckersen", so I searched my comprehensive list. I suspect that "Jan Eckersen" is a reference to Jan Egbertszoon (Egbertssen) Ooms, who commanded the Amsterdam ship Gouda (28 guns). He had previously operated under De Ruyter's command, and was probably was then, as well. Lambert Bartelszoon, from Zeeland, had served with the fleet in since early in the war, and commanded a ship whose name has remained a mystery.