French sailors practicing abandoning their ship.
Location of events unknown/ unclear. sailors climb down ropes onto floating makeshift rafts - like pallets / skids. Also lifeboats are lowered and some get in those. Shot of the rafts floating about together as they get them hooked up.
Then shot from the front of the chain 2 men from some navy on some other craft stand in foreground behind them they're pulling the lifeboats and rafts hooked together in a line.