RV Bay Hydro II (S5401), sometimes rendered as R/V Bay Hydro II, is an American oceanographic research vessel in non-commissioned service in the fleet of the National Oceanic and Atmospheric Administration (NOAA) since 2009. She is registered as NOAA S5401.

Design Bay Hydro II is a hydrofoil-assisted catamaran.Anonymous, "Kvichak Marine Delivers Catamaran to NOAA," Marine Link Accessed 6 November 2022 At in length (sources disagree),shipbuildinghistory.com VIGOR BALLARD April 1, 2020 Accessed 6 November 2022 she is one of the smallest research vessels in the NOAA fleet.Anonymous, "A small hydro research vessel delivers big results," NOAA Office of Coast Survey, September 10, 2014. Her twin engines are rated at 2,300 rpm each and give her a maximum speed of .

Bay Hydro II has a moon pool in her main deck amidships through which she can deploy a sonar on a retractable strut. She also has two hull-mounted Airmar M42 dual-frequency transducers and an Interocean survey winch for use in towing side-scan sonar equipment.

In addition to her sonars, Bay Hydro II has an A-frame davit rated for , a HVAC system, a fresh water capacity, a full galley, and crew accommodations.

Construction Bay Hydro II was ordered in early 2008 from Kvichak Marine Industries in Seattle, Washington. and completed in September 2008. After her delivery to NOAA, her christening ceremony took place on 15 April 2009 at the Inner Harbor in Baltimore, Maryland.Anonymous, "NOAA Dedicates New Chesapeake Bay Research Vessel," NOAA News, March 16, 2009Anonymous, "NOAA Christens Chesapeake Bay Survey Ship," Environmental Protection, April 23, 2009 During the ceremony, she received a cannon salute from the sloop-of-war , a museum ship moored in the Inner Harbor.

Operations and service history

Bay Hydro II is based at the NOAA facility at Solomons, Maryland. She conducts hydrographic survey and environmental protection research operations in the Chesapeake Bay.NOAA Office of Coast Survey Survey Vessels Hydrographic Ships Accessed 6 November 2022 Upon her christening in April 2009, NOAA noted that her surveying capabilities were the state of the art at the time, and gave NOAA a capability to gather data to create highly accurate nautical charts, including data well on changes in dredged channels, and to respond rapidly to requirements to collect information on new hazards to navigation created by hurricanes, ice, and shipwrecks. Her activities in the Chesapeake Bay support safe navigation to a number of large ports, including Baltimore, Maryland; Wilmington, Delaware; Philadelphia, Pennsylvania; and ports in the Hampton Roads area of Virginia.

NOAA also uses Bay Hydro II to evaluate new hydrographic survey techniques and for outreach to elementary schools, secondary schools, and universities.

See also NOAA ships and aircraft

References

External links Video "Bay Hydro II dedication" on YouTube