In using AL166 you need to reduce in size most of the ventilators. Difficult to find decent pictures

Original caption - This marvellous photograph of the Lusitania was taken in New York during her single stay there between December 21 and 24 of 1912. This was after her two-month layup for turbine repairs, and just before her turbines suffered catastrophic failure. She would not return to New York again until August 30, 1913, over eight months from the time this photo was taken. It is clear that snow had fallen after the ship’s arrival, as it has accumulated on her upper decks. A crewman tends to one of the Bridge windows. The picture shows that, since her entry into service, a number of changes had been carried out on the ship’s ventilator system. Some of the original cannister-style vents had been replaced with Mauretania-esque cowl ventilators, which had proved sturdier. Extra lifeboats, brought aboard after the sinking of the Titanic that previous spring, can be seen on the Boat Deck. Extra davits would be installed later in the ship’s career. – (Library of Congress, Prints & Photographs Division, Author’s Collection [Restoration by J. Kent Layton])