9 North
9 North, or Nine North, is a region of hydrothermal vents on the East Pacific Rise in the Pacific Ocean, 900 kilometers off the coast of Acapulco, Mexico; it has been so named by scientists because its latitude is 9°50' N.
 It was first seen to erupt in 1991 by the deep submersible "Alvin" during a survey for the Ocean Drilling Program.
 In November 1999, scientists, students, education specialists, and film crews returned to 9 North to see how the biology and landscape had changed over time.
 IMAX, National Geographic, and BBC film crews have made videos about the vents at 9 North, most noticeably "Volcanoes of the Deep Sea".
Fighter Pilot: Operation Red Flag
Fighter Pilot: Operation Red Flag is an IMAX film centered on the experiences of a USAF F-15 Eagle fighter pilot, then-Captain John Stratton, who wants to be professionally successful as a fighter pilot.
 It chronicles his experience during USAF Red Flag training at Nellis AFB, a simulated air war designed to train pilots for combat.
 Directed by Stephen Low and presented by Boeing, the film shows how airmen simulate a war without killing one another, as well as the training of military air base firemen, military ordnance crews, midair refueling operations, cockpit views, and other aspects of aerial combat.
 The film was released in December 2004.
Across the Sea of Time
Across the Sea of Time is a 1995 American IMAX 3D short adventure film produced and directed by Stephen Low, and written by Andrew Gellis.
 It stars Peter Reznick as a young Russian boy who travels to the United States in search of his ancestor's family.
The Defender (1989 film)
The Defender is a 54-minute Canadian documentary film, made in 1988 by the National Film Board of Canada (NFB) and directed by Stephen Low.
 The film depicts the building of a strike fighter aircraft by Bob Diemert, an eccentric Canadian aviation engineer.
 His dream of building the next Canadian fighter aircraft to challenge the might of the Soviet Union was dependent on selling a restored warbird.
Titanica
Titanica is a 1992 IMAX documentary film about the RMS "Titanic".
 The film was directed by Stephen Low and narrated by Cedric Smith, Anatoly Sagalevich and Ralph White.
 The film mostly focuses on footage taken at the wreck of the RMS "Titanic", also featuring footage of the expedition crew searching the wreck as well as interviews with "Titanic" survivors Frank John William Goldsmith and Eva Hart.
 Using Eva and the crew members, Low conveys the voice of the documentary by showing the Titanic's wreckage as a graveyard which is to be respected and treated with caution and care.
 It was the second feature length IMAX film released, following "Stones at the Max" in 1991.
 An edited 40 minute version of the film was also later released for IMAX theatres in 1995; this version had new narration by Leonard Nimoy, though it retains most of White's narration.
 This edited version later became the basis for another edited version released in 1997, featuring 27 more minutes of interviews with Ralph White, Emory Kristof, and other experts.
Rocky Mountain Express
Rocky Mountain Express is a 45-minute IMAX film released in the fall of 2011.
 Directed by Canadian filmmaker Stephen Low, it features the Canadian Pacific Railway’s restored 4-6-4 H1b Hudson steam locomotive 2816.
 Shooting began in 2006 and continued intermittently over the next five years, primarily on the main line between Calgary and Vancouver, with the cooperation of the CPR.
 The film was shot in 15 perforation/70 mm film, using a helicopter and gyro-stabilized camera mount as well as a variety of engine and train mounts.
Stephen Low
Stephen Low (born 1950 in Ottawa, Ontario) is a Canadian film director and screenwriter who works extensively in the IMAX and IMAX 3D film formats.
 Based in Montreal, Quebec, over his 30-plus year career Low has directed numerous award-winning film documentaries including "" (1980), "Beavers" (1988), "Titanica" (1991), "Super Speedway" (1997), "Volcanoes of the Deep Sea" (2003), "" (2004), "Ultimate Wave Tahiti 3D" (2010), "Legends of Flight 3D" (2010), "Rescue 3D" (2011) and "Rocky Mountain Express" (2011).
Collaborative Research into Small Arms Technology
Collaborative Research Into Small Arms Technology (CRISAT) is the name of a series of studies conducted by the North Atlantic Treaty Organisation (NATO), identifying and defining threats with regard to the standardisation in the manufacturing of military equipment.
 The CRISAT target is defined as a 1.6 mm titanium (UK IMI Ti 318) plate supplemented by 20 layers of Kevlar (UK/SC/4468) as defined in STANAG 4512.
 This target is intended to replicate the personal protection used by former Warsaw Pact countries, and it is still used as a reference.
 The CRISAT target will stop the commonly used 9×19mm Parabellum full metal jacket cartridge, but it is pierced by the newer 5.7×28mm and 4.6×30mm personal defense weapon cartridges at ranges in excess of 200 meters.
Super Speedway
Super Speedway is a 1997 documentary racing film chronicling one man's quest to get his new Champ Car Lola chassis up to speed, and another's goal of rebuilding an old 1964 roadster once driven by the legendary Mario Andretti.
 The film was directed by renowned IMAX director Stephen Low and produced by Pietro Serapiglia.
 It was narrated by Paul Newman (who was himself an avid racer and co-owner of Newman/Haas Racing).
 It first premiered at IMAX theaters nationwide.

Question: Which documentary that used 9 North was directed by Stephen Low?
Answer: Volcanoes of the Deep Sea