Saint Martin for filming, a hurricane struck the town and destroyed the set during construction. It had to be rebuilt with hurricane-proof buildings. Exteriors of the bow mockup on the bridge ship were used in the first part of the scene when the Seabourn Legend is crashing into sailboats in the harbor; the bridge ship was used in place of the actual Seabourn Legend, as the latter could not navigate the harbor's shallow waters. The captain of the bridge ship had great difficulty hitting the sailboats during filming, despite cameras placed on the boats for the captain to view. A second mockup was constructed for the latter part of the scene, which featured a long replica of the Seabourn Legend bow. This mockup, referred to as the "rail ship", weighed , and sat atop a set of wheels along a track built underwater. Filming the final scene with the rail ship was initially delayed because it could not be hoisted onto the track because of large waves caused by the hurricane. The scene was filmed using 14 cameras, with the rail ship traveling at a time into the set, with debris from the destruction cleared between each take. The mockup was powered by four diesel engines and pulled by a large chain at a speed of . The scene's three planned collisions were aided by explosives and hydraulics to ensure the set's structures collapsed precisely. Concrete was also removed from the buildings and replaced with sand-coated balsa wood so the buildings would "crumble" more effectively after being hit by the rail ship. In the scene's final shot, it had to stop successfully within a area on the first take. The five-minute scene cost $25 million to produce, roughly one quarter of the film's entire budget, and set records as both the largest and the most expensive stunt ever filmed. The underwater scene where Alex swims underneath the ship was filmed in the Tongue of the Ocean off the coast of New Providence in the Bahamas. The location was chosen due to its water clarity, however, after viewing dailies of the scene, De Bont felt the water was too clear, so it was reshot with divers above the camera dusting the area in front of the lens with sediment to alter the clarity of the footage. The scene was filmed underneath a propeller-less barge that was designed to resemble the Seabourn