After reviewing their taping of the moment, the filmmakers extended the sequence, adding another 10.6 meters (35 ft) of film to give the audience enough time to recover to enjoy the "much-needed moment of comic relief" provided by Brody's line.
"for we have received orders, for to sail to old England..."
"for we've received orders for to sail to old Boston..."
Shaw who was born and raised in England was an accomplished novelist and playwright, and may have become familiar with the tune while working as a teacher in the fishing town of Saltburn by the Sea.
A. They are at a different frame rate than the footage and look like hand drawn animation. They are no convincing. B. The shots in question were shot day for night. In other words they were shot during daylight and process to look dark and blue. C. The film stock used for Jaws would not have been able to expose for stars, shooting stars, or even the clouds that are visible. The clouds are also a give way that the shots are faked to look like night.
Another VFX element that was hand animated was the phosphorous glow around the barrels drawn by the shark at night.