Robinson, loc. cit., dates the pictures to 1670 and suggests that the Calm may have been done for the van de Velde studio mainly by the Younger, but with Hendrik Dubbels completing the picture with the foreground figures and vessels; although he adds: 'there is, however, as yet no firm evidence of Dubbels having worked for the Van de Velde studio'. He also suggests some studio participation in the pendant.
The Gouden Leeuw, with eighty-three guns was built in 1666, but she may not have been used at sea until June 1667, when Jan Gideonsz. Verburgh flew his flag at her mizzen. In March 1673, Cornelis Tromp was reinstated as Lieutenant-Admiral of Amsterdam and he joined the Dutch fleet in the Gouden Leeuw in May of that year. The ship, identifiable by the lion on her tafferel, was also depicted by van de Velde in a picture now in the Royal Collection (ibid., no. 34) and in a large grisaille of Dutch flagships at sea, in the Palazzo Pitti, Florence (ibid., no. 655).