Margaret Gwyer was wearing this camisole when the liner RMS Lusitania was torpedoed by a German U-boat on 7 May 1915. She was one of almost 2,000 passengers and crew on board the ship as it sank - 1,200 people died in the attack. Gwyer fell from a lifeboat and was sucked into one of the ship’s funnels, but a boiler explosion blew her back to the water’s surface. She was rescued and kept the camisole as a reminder of her escape.