Pisces V

History
NamePisces V
General characteristics
Length20 ft
Width10 ft 6in
Height11 ft
Weight13 tons
Crew1 Pilot 2 Observers
Life support140 hours for 3 people
Maximum operating depth6,280 ft(~2000m)
Power2 lead-acid battery systems
Propulsion2 side-mounted reversible thrusters tiltable through 90 degrees
Speed3 Kts
Dive duration7–9 hours
MaterialsPersonnel sphere, Trim sphere, and Aft sphere: HY 100 steel
FrameWelded, oil-filled, pressure compensated tubular steel
Viewports3 forward-looking acrylic windows, 6" interior-14" dia exterior

Pisces V is a type of crewed submersible ocean exploration device, powered by battery, and capable of operating to depths of 2,000 metres (6,600 ft), a depth that is optimum for use in the sea waters around the Hawaiian Islands. It is used by scientists to explore the deep sea around the underwater banks in the main Hawaiian Islands, as well as the underwater features and seamounts in the Northwestern Hawaiian Islands, specifically around Kamaʻehuakanaloa Seamount (formerly Loihi).[1]

In 1973, Pisces V took part in the rescue of Roger Mallinson and Roger Chapman, who were trapped on the seabed in Pisces V's sister submersible Pisces III.[2] In August 2002, Pisces V and her sister Pisces IV discovered a World War II Japanese midget submarine outside of Pearl Harbor which had been sunk by the destroyer USS Ward in the first American shots fired in World War II. In 2011, marine scientists from HURL celebrated the 1,000 dives of Pisces V and Pisces IV.[3]

  1. ^ Shackelford, Rachel. "NOAA Ocean Explorer: Pisces IV and V". oceanexplorer.noaa.gov. Retrieved 2009-05-08.
  2. ^ Chapman, Roger (1975). No Time On Our Side. New York: W. W. Norton & Company. pp. 98–111, 127–129. ISBN 0-393-03186-1. LCCN 75-19154.
  3. ^ "Students nationwide virtually participate in Hawaii Undersea Research Laboratory's 1,000th Pisces submersible dive". National Oceanic and Atmospheric Administration. 2011-04-05. Retrieved 2011-04-10.