SBE 16 SeaCAT C-T (P) Recorder - DISCONTINUED

The SBE 16 was discontinued in 2001. Order the SBE 16plus V2 (RS-232 output) or SBE 16plus-IM V2 (Inductive Modem telemetry) in place of the SBE 16.

The list below includes (as applicable) the current product brochure, manual, and quick guide; software manual(s); and application notes.

For older SBE 16 product manuals, organized by instrument firmware version, click here.

Title Type Publication Date PDF File
SBE 16 Manual Product Manual Monday, September 25, 2006 16_011.pdf
Seasave V7 Manual Software Manual Thursday, May 26, 2016 Seasave_7.26.0.pdf
SBE Data Processing Manual Software Manual Thursday, May 26, 2016 SBEDataProcessing_7.26.0.pdf
Field Service Bulletin 13: Jackscrew Replacements Field Service Bulletins Monday, March 8, 2010 FSB13.pdf
Seasave V7 Quick Guide Software Quick Guide Tuesday, August 3, 2010 Seasave_ReferenceSheet_001.pdf
AN02D: Instructions for Care and Cleaning of Conductivity Cells Application Notes Monday, June 13, 2016 appnote2DJun16.pdf
AN06: Determination of Sound Velocity from CTD Data Application Notes Tuesday, February 2, 2010 appnote06Aug04.pdf
AN08: Sea-Bird Universal Opto-isolated Junction Box Application Notes Friday, March 7, 2008 appnote08.pdf
AN10: Compressibility Compensation of Sea-Bird Conductivity Sensors Application Notes Tuesday, May 7, 2013 appnote10May13.pdf
AN12-1: Pressure Port Oil Refill Procedure and Nylon Capillary Fitting Replacement Application Notes Friday, September 12, 2008 appnote12-1Sep08.pdf
AN14: 1978 Practical Salinity Scale Application Notes Thursday, January 12, 1989 appnote14.pdf
AN16: Entering Calibration Coefficients for D&A Instruments (Campbell Scientific) OBS-3 Optical Backscatter Sensor Application Notes Thursday, September 18, 2014 appnote16Sep14.pdf
AN27: Strain Gauge Pressure Sensor Error Sources - older instruments with Paine pressure sensors Application Notes Saturday, February 13, 2010 appnote27Feb10.pdf
AN31: Computing Temperature and Conductivity Slope and Offset Correction Coefficients from Laboratory Calibrations and Salinity Bottle Samples Application Notes Monday, June 13, 2016 appnote31Jun16.pdf
AN33: Using the DC Opto Isolated Junction Box [PN 91118] Application Notes Saturday, March 3, 2001 appnote33.pdf
AN34: Instructions for Use of Conductivity Cell Filling and Storage Device PN 50087 and 50087.1 Application Notes Saturday, October 13, 2012 appnote34Oct12.pdf
AN42: ITS-90 Temperature Scale Application Notes Wednesday, May 18, 2016 appnote42May16.pdf
AN52: AC Powered Opto-Isolated RS-485 to RS-232 Junction Box P/N 80491 Instructions for Application and Use Application Notes Tuesday, February 9, 2010 appnote52Feb10.pdf
AN56: Interfacing to RS-485 Sensors Application Notes Wednesday, February 11, 2009 appnote56Feb09.pdf
AN57: Connector Care and Cable Installation Application Notes Tuesday, May 13, 2014 appnote57Jan14.pdf
AN64-1: Plumbing Installation - SBE 43 DO Sensor and Pump on a CTD Application Notes Wednesday, April 16, 2008 appnote64-1Apr08.pdf
AN67: Editing Sea-Bird .hex Data Files Application Notes Monday, October 15, 2001 appnote67.pdf
AN68: Using USB Ports to Communicate with Sea-Bird Instruments Application Notes Friday, October 19, 2012 appnote68Oct12.pdf
AN69: Conversion of Pressure to Depth Application Notes Monday, July 1, 2002 appnote69.pdf
AN70: Installing Anti-Foulant Device Mount Kit on SBE 4, 16, 19, and 21 Conductivity Cells Application Notes Monday, May 19, 2008 appnote70May08.pdf
AN71: Desiccant Use and Regeneration (drying) Application Notes Wednesday, May 18, 2016 Appnote71May16.pdf
AN83: Deployment of Moored Instruments Application Notes Thursday, May 19, 2016 appnote83May16.pdf
AN90: Absolute Salinity and TEOS-10: Sea-Bird's Implementation Application Notes Tuesday, September 3, 2013 AppNote90Sep13.pdf
Deployment Endurance Calculator is an aid for quickly determining the maximum deployment length for a moored instrument, based on battery capacity. Deployment Endurance Calculator is part of our Seasoft V2 software suite.
Version 1.7.0 released March 23, 2016
DeploymentEnduranceCalcV1.7.0-b88.exe for Windows XP/Vista/7


Seaterm© is a terminal program for setup and data upload of a wide variety of older Sea-Bird instruments. Seaterm is part of our Seasoft V2 software suite.
Version 1.59 released October 10, 2007
Seaterm_Win32_V1_59.exe for Windows XP/Vista/7


Seasave V7© acquires, converts, and displays real-time or archived raw data from Sea-Bird profiling CTDs and thermosalinographs, as well as the SBE 16 family of moored CTDs. Seasave V7 is part of our Seasoft V2 software suite.
Version 7.26.2 released September 6, 2016
SeasaveV7.26.2-b13.exe for Windows XP/Vista/7


SBE Data Processing© consists of modular, menu-driven routines for converting, editing, processing, and plotting of oceanographic data acquired with Sea-Bird profiling CTDs, thermosalinographs, and the SBE 16 and 37 families of moored CTDs. SBE Data Processing is part of our Seasoft V2 software suite.
Version 7.26.2 released September 6, 2016


How accurate is salinity measured by my CTD? What factors impact accuracy?

One of the reasons that this is not a simple question is that there are several factors to take into consideration regarding the error margin for practical salinity measurements. Salinity itself is a derived measurement from temperature, conductivity, and pressure, so any errors in these sensors can propagate to salinity. For example, Oour initial accuracy specification for the SBE 3plus temperature sensor and SBE 4 conductivity sensor on an SBE 9plus CTD is approximately equivalent to an initial salinity accuracy of 0.003 PSU (note that conductivity units of mS/cm are roughly equivalent in terms of magnitude to PSU).

However, another issue to consider is that this accuracy is defined for a clean, well-mixed calibration bath. In the ocean, some of the biggest factors that impact salinity accuracy are 1) sensor drift from biofouling or surface oils for conductivity in particular and 2) dynamic errors that can occur on moving platforms, particularly when conditions are rapidly changing, which will be true for all sensors that measure salinity. Sea-Bird provides recommendations, design features such as a pumped flow path, and data processing routines to align and improve data for the salinity calculation to account for thermal transients and hysteresis, and to match sensor response times.  Depending on the environment and the steepness of the gradient, and after careful data processing, this may continue to have an impact on salinity on the order of 0.002 PSU or more, for example. For more details, see Application Note 82.

Lastly, note that salinity in PSU is calculated according to the Practical Salinity Scale (PSS-78), which is defined as valid for salinity ranges from 2 – 42 PSU.

Many cables, mount kits, and spare parts can be ordered online.

Spare Parts

  • 801483 9D (10.8 V / 42 AH) lithium battery pack kit (document 67143)
    Note: batteries not included.
  • 801479 3DD (10.8 V / 30 AH) lithium battery pack kit (document 67144)
    Note: batteries not included.
  • 801542 AF24173 Anti-Foulant Device (pair, bagged, labeled for shipping)
  • 50315 Anti-foul holder kit — installs on SBE 4 & SeaCATs (not SeaCATplus) to allow use of AF24173 in place of obsolete 24012 Anti-Foulant Devices. Order AF24173 separately. (see Application Note 70)
  • 50012 O-ring kit for SBE 16 or 19 (document 67026)
  • 50092 Jackscrew kit for SBE 16, 17plus, 19, 21, 25, 26/26plus, 52-MP, 53, 54, AFM, or PDIM
  • 50082 Hardware kit for SBE 16 with titanium housing  (document 67081)
  • 60021 Battery end cap hardware & O-ring kit for SBE 16/16plus/16plus-IM/16plus V2/16plus-IM V2, 17plus, 19/19plus/19plus V2, 25, 26/26plus, 53, 54, 55, or AFM (document 67042)
  • 90087 CTD plumbing kit (document 67108)
  • 50072 Support kit for SBE 16 or 19 (document 67017)