Quiberon Bay
On 8 February 1918, "Wanderer"s portion of the coastal convoy route was extended. From then on, instead of simply making the single-day passage from Brest to Quiberon Bay, she laid over for the night at Quiberon Bay and continued south with the convoy to the mouth of the Gironde River and thence into Bordeaux. On the night of 22–23 April 1918, during the layover at Quiberon Bay on the return trip from Bordeaux to Brest, she witnessed the explosion of the ammunition-laden SS "Florence H. ". Though in reasonably close proximity to the ill-fated ship, "Wanderer" was prevented from approaching the floating conflagration by the large quantity of high explosives she carried to use against U-boats. Instead, she was forced to leave the rescue operations to the destroyers and smaller craft in the bay.