[1141] hall = hull.
[1142] glass = a lantern to guide the man-of-war’s course by the merchantman’s.
[1143] ancients = ensigns.
[1144] stirr’d = moved, lowered.
[1145] can = ken, know.
[1146] Weate = wit ye, know.
[1147] geare = business, fighting.
[1148] sway = go, turn out.
[1149] swarm’d = climbed.
[1150] bearing arrow = a long arrow for distant shooting.