You can help by adding some relevant images or discussing changes on the talk page. Please remove this template when images are added. Note: Please remember to follow our image policy in naming and licensing before adding images.
"Use the Strombergs to destroy a convoy before heading underwater to scan the submarine."
Once the convoy is destroyed, the crew heads to Paleto Bay while defeating enemies in Nightshark SUVs, but Lester informs he detected a network of sea mines around the vessel, so the crew have to get into the sea and destroy the ten mines with the torpedoes.
After destroying the mines, the crew are now instructed by Avon to scan the wreckage of a spy plane they lost the other day, so they can determine which weapon they used. A red scanning projection comes from the front end of the Strombergs to indicate it is scanning, so everyone have to scan the wreckage and then the submarine.
After getting the necessary data, the crew have to leave the submarine and deliver it to a drop-off point on Paleto Bay, on the parking lot of the Ammu-Nation store to complete the mission.