DAKAR, Oct 19 (Reuters) - Senegal seized more than two tonnes of pure cocaine from a ship off its Atlantic coast, the navy said on Tuesday, in the West African country"s largest ever cocaine bust. The 2,026 kg of cocaine was found on a ship 363 km (226 miles) off the coast by naval forces backed by air support from the French air force, the navy said in a statement. The ship had five crew members aboard, it added. Drug smugglers typically use West Africa as a transshipment point for cocaine en route from South America to Europe In January, authorities in neighbouring Gambia seized nearly three tonnes of cocaine from a shipment of industrial salt originating in Ecuador. Morocco police on Monday seized one tonne and 335 kilograms of cocaine concealed in a container ship in Tangier Med Port.