It was not until March that the French made another attempt to break out of Toulon, putting to sea on 29 March. "Neptune" formed part of Villeneuve's division, consisting of the flagship, the 80-gun "Bucentaure", and the 74-gun ships "Pluton", "Mont-Blanc", "Berwick" and "Atlas". The other division was commanded by Rear-Admiral Pierre Dumanoir le Pelley, flying his flag aboard the 80-gun "Formidable", and accompanied by the 80-gun "Indomptable", and the 74-gun ships "Swiftsure", "Scipion" and "Intrépide". Accompanying the fleet were six frigates and two brigs. The French fleet reached Cartagena on 6 April, having evaded Nelson through sheer chance, and pressed on from there, sailing through the Strait of Gibraltar on 8 April. After resupplying briefly at Cadiz, the fleet sailed to the West Indies, arriving at Fort de France, Martinique on 14 May, where they were joined over the next two days by six Spanish ships of the line and a frigate under Frederico Gravina.