The Colombian navy has seized two homemade submarines believed to have been built by the Farc rebel group to smuggle cocaine out of the country.
The two fibreglass vessels were found in a clandestine shipyard outside the country's largest port, Buenaventura.
One of the 17m (56ft) submarines was ready for launch, while the other had nearly been completed, the navy said.
Correspondents say drug-traffickers are increasingly relying on the sea to avoid checkpoints and border crossings.
Since 2005, the Colombian armed forces have uncovered nine homemade submarines, including a 20m (66ft) vessel on the country's Caribbean coast in August.
In 2000, police found a 30m (100ft) steel submarine under construction far inland, near the capital Bogota, which would have been capable of carrying up to 200 tons of cocaine.