NavList:

Based on orientation of Cassiopeia, Polaris should be below Caph, maybe it's the brighter star left to the right mast [2.8 cm above horizon on my screen], ca 38% of altitude of Caph [7.3 cm above horizon on my screen]. Caph should also be close to upper culmination in that position. That would indicate latitude about 19N from stellarium values. Vega [the bright star on the left] is 2.5 cm above the horizon, consistent with a slightly lesser altitude than Polaris. Maybe Kochab is the brighter star above the bowsprit?