Can someone put down a numerical value, for in-game knots, for how slow a DD must be travelling in a straight line, to avoid getting seen while popping smoke? Been killed a lot of times despite slowing down in smoke, but not entirely sure how slow I must go. If each smoke puff is really a 450m radius, and the DD is, say 250m long(2.5x scaling), assuming the smoke puff is generated from the centre of the ship, then 450m-(125m) =325m. 325m/5seconds = 162knots which is absurd. Just as a DD player, I must know what the maximum speed to go in smoke is. It's probably really slow(10knots, maybe?), but I want to know for sure.
EDIT: Just did some googling and found that smoke generators are usually on the rear of the ship. So assuming that the puff is created at the end of the ship, and if the ship is 250m long, then 450-250=200m, which means 200m in 5 seconds, which is 40m/s or 77.8 knots. But this can't be right, I know as a DD player going any faster than 20 knots, you are sure to get revealed in smoke. Unless the speed in the game is scaled too?