The Fathom Tether is a high quality tether cable designed specifically for ROVs and other subsea applications. It is neutrally buoyant, has 350 lb breaking strength, and is embedded with water-blocking fibers to seal any leaks. The tether has a diameter of 7.6mm and is slimmer than the vast majority of comparable ROV tethers.

The tether carries four unshielded twisted pairs (UTP) of 26AWG wire. These pairs are colored and arranged in the same fashion as a Cat5 networking cable including cross-talk resistance.

The core of the cable contains Kevlar strands for strength and Dacron fibers for space filling. Both fibers are impregnated with waterblocking compound to block any leaks caused by nicks or rips in the cable. The high-visibility yellow polyurethane foam jacket resists abrasion and provides neutral buoyancy.

The stiffness of the cable is designed to be flexible enough to give plenty of freedom to your ROV, but stiff enough that it does not become tangled easily. Due to the polyurethane jacket in the new version, the tether is more flexible than the original version.

The capabilities of this tether are meant to provide design flexibility and a wide variety of uses.



BlueRobotics
Cables
Fathom ROV Tether (ROV-ready) - Marine Thinking
Fathom ROV Tether (ROV-ready) - Marine Thinking
Fathom ROV Tether (ROV-ready) - Marine Thinking
Fathom ROV Tether (ROV-ready) - Marine Thinking
  • SKU: FA-TE-26AWG-25M-BR

Fathom ROV Tether (ROV-ready)

$310.99
This professional-grade neutrally buoyant tether combines rugged strength and durability with high-performance electrical characteristics for wide-ranging ROV and subsea applications. The tether comes with a pre-installed Binder 770 connector and WetLink Penetrator

    The Fathom Tether is a high quality tether cable designed specifically for ROVs and other subsea applications. It is neutrally buoyant, has 350 lb breaking strength, and is embedded with water-blocking fibers to seal any leaks. The tether has a diameter of 7.6mm and is slimmer than the vast majority of comparable ROV tethers.

    The tether carries four unshielded twisted pairs (UTP) of 26AWG wire. These pairs are colored and arranged in the same fashion as a Cat5 networking cable including cross-talk resistance.

    The core of the cable contains Kevlar strands for strength and Dacron fibers for space filling. Both fibers are impregnated with waterblocking compound to block any leaks caused by nicks or rips in the cable. The high-visibility yellow polyurethane foam jacket resists abrasion and provides neutral buoyancy.

    The stiffness of the cable is designed to be flexible enough to give plenty of freedom to your ROV, but stiff enough that it does not become tangled easily. Due to the polyurethane jacket in the new version, the tether is more flexible than the original version.

    The capabilities of this tether are meant to provide design flexibility and a wide variety of uses.



    • 1 x Fathom ROV Tether with Installed Binder 770 Plug and WetLink Penetrator (of the selected length)
    • 1 x Header Pin to Ferrule Adapter to Connect to Fathom-X
    • 1 x Tether Cable Thimble
    • 1 x M10 Nut
    • 1 x O-ring for Bulkhead
    • 5 x Heavy Duty Zip Ties



    Standard Fathom ROV Tether

    Parameter

    Value

    Physical

    Tether Diameter

    7.6 mm

    0.30 in

    Weight

    0.043 kg/m

    0.0287 lb/ft

    Outer Jacket

    Polyurethane Foam

    Buoyancy in Freshwater

    Neutral

    Buoyancy in Saltwater

    Slightly Positive

    Wire Gauge

    0.14 mm2

    26 AWG

    Working Strength

    35 kgf

    80 lb

    Breaking Strength

    155 kgf

    350 lb

    Minimum Working Bend Diameter

    75 mm

    3 in

    Compatible WetLink Penetrator

    WLP-M10-7.5MM-HC

    Electrical

    DC Resistance @ 20°C

    0.0386 Ω/ft

    0.127 Ω/m

    Insulation Resistance @ 500 VDC

    > 500 MΩ/kft

    > 1640 MΩ/km

    Voltage Rating

    300 VDC

     

    Fathom Slim ROV Tether

    Parameter

    Value

    Physical

    Tether Diameter

    4.0 mm

    0.16 in

    Weight in Air

    0.012 kg/m

    0.00805 lb/ft

    Jacket Material

    Polyurethane Foam

    Buoyancy in Freshwater

    Neutral

    Buoyancy in Saltwater

    Slightly Positive

    Wire Gauge

    0.14 mm2

    26 AWG

    Working Strength

    35 kgf

    80 lb

    Breaking Strength

    155 kgf

    350 lb

    Minimum Working Bend Diameter

    25 mm

    1 in

    Compatible WetLink Penetrator

    WLP-M06-4.5MM-HC
     WLP-M10-4.5MM-HC

    Electrical

    DC Resistance @ 20°C

    0.0445 Ω / ft

    0.146 Ω / m

    Voltage Rating

    300 VDC

     

    Pinout

    Pair

    Wire

    Color

    Binder Connector Pin #

    Pair 1

    Wire 1

    Blue

    1


    Wire 2

    Blue/White

    2

    Pair 2

    Wire 1

    Orange

    3


    Wire 2

    Orange/White

    4

    Pair 3

    Wire 1

    Green

    5


    Wire 2

    Green/White

    6

    Pair 4

    Wire 1

    Brown

    7


    Wire 2

    Brown/White

    8


    Cross Section

    Standard Fathom ROV Tether



    Fathom Slim ROV Tether





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