Comments by "SeanBZA" (@SeanBZA) on "MV Dali and Port of Baltimore Update - March 27, 2024" video.

  1. Large lights coming on after a while is because they are high pressure sodium lights, and those typically, unless you use expensive fast relight ballasts, or use expensive dual arc tube lamps, will take 3 to 5 minutes to cool down before the most common ballast ignitors will be able to relight them. Mast light likely a 1000W lamp, and the side ones are 400W lamps, which do take faster to relight than the big one. Shipping uses them because they are above all cheap, have a lot of light output, and are very rugged, with them being quite happy running on 50Hz and 60Hz mains with no problem, and also surviving all sorts of mains voltage surges and spikes with no problem, unlike LED lights, which will fail rapidly. Plus will still operate even when exposed, and wet, unlike the delicate electronics. 15000 hour life, which can easily be exceeded with good quality lamps, and they are easy to change out, unscrew the E40 lamp from the socket, screw in the new one, and close the cover. A big advantage on a ship, where you have to do this after climbing a ladder to get to the lamp, only needing to carry a lamp, and a pair of pliers to release the clips, or a screwdriver to undo screws, as opposed to a LED where you need to winch the entire fixture up there to replace a faulty one. Plus they just cycle when old, on for 5 minutes, then off, till eventually they are just a dull blue red from age, or the arc tube shatters inside the glass envelope.
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