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Fathom ROV Tether (ROV-ready)

Fathom ROV Tether (ROV-ready)

規格
雙絞線 4pin
長度
100m~300m
The Fathom ROV Tether is a professional-grade, neutrally buoyant subsea cable designed for ROV and subsea applications. It combines mechanical strength, durability, and stable electrical performance.
Each tether is factory-terminated with a Binder 770 connector and a WetLink penetrator for direct system integration.
Maximum communication length (based on ranged testing):
Standard: 300 m
Slim: 200 m
ROV-ready assemblies are not produced beyond these lengths.

Product Description

Available in 4 mm (Slim) and 7.6 mm (Standard) diameters, the reduced profile minimizes hydrodynamic drag and cable load. The Slim version is optimized for low-drag, deep, high-current, and long-distance deployments, while remaining lightweight and easy to handle (100 m ≈ 3 lb / 1.4 kg).

The tether offers approximately 300–350 lb breaking strength, balancing flexibility and tensile durability while reducing tangling during operation.

Depending on the model, the cable contains one (Slim) or four (Standard) pairs of 26 AWG unshielded twisted pairs (UTP), arranged per Cat5 color coding with cross-talk resistance. The Slim tether supports primary communication only and does not include spare pairs.

Kevlar strength members and Dacron filler fibers are impregnated with water-blocking compound to limit water ingress in case of jacket damage. The high-visibility polyurethane foam jacket provides abrasion resistance and neutral buoyancy.

The cable is available as an ROV-ready assembly or by the meter without terminations.


Key Features

  • Neutrally buoyant subsea tether

  • Binder 770 connector and WetLink penetrator (pre-installed)

  • Max communication length: 300 m (Standard) / 200 m (Slim)

  • 4 mm or 7.6 mm diameter

  • Approx. 300–350 lb breaking strength

  • Kevlar reinforcement with water-blocking construction

  • 26 AWG UTP (1 pair Slim / 4 pairs Standard)

  • High-visibility polyurethane foam jacket

  • Available terminated or by-the-meter

 

 

  Parameter

Standard Fathom Tether

(4 twisted pair)

Fathom Slim Tether

(1 twisted pair)

Performance

Maximum Rated Depth (seawater) 1000 m
Design Lifetime¹ 3 years or 500 cycles to rated depth
Temperature Rating (air) -25 to 60°C
Temperature Rating (water) 0 to 40°C

Installed Penetrators and
Connectors

Topside Binder 770 Plug (6-8mm) Binder 770 Plug (2.5-4mm)
ROV Side M10-7.5mm-HC M10-4.5mm-HC
Twisted Pairs 0.1" Header Pins, 3 Position

Tools

Compatible Bulkhead Wrench BR-100977-010
Recommended Installation Torque 3.5 Nm

Physical

Tether Diameter 7.6 mm 4.0 mm
Weight 0.043 kg/m 0.012 kg/m
Outer Jacket Polyurethane Foam
Buoyancy in Freshwater Neutral
Buoyancy in Saltwater Slightly Positive
Wire Gauge 0.14 mm² / 26 AWG
Working Strength 35 kgf
Breaking Strength 155 kgf
Minimum Working Bend Diameter 75 mm 25 mm
Recommended WLP Thru Hole Diameter 10.2 mm
Bulkhead Thread M10 x 1.5
Bulkhead Thread Length 20 mm
Bulkhead/Nut Wrench Flats 16 mm
Overall Assembled Height From Endcap 25 mm 23.5 mm
Overall Outer Diameter 18 mm
Bulkhead O-ring Size AS568-013 Buna-N 70A
Bulkhead/ Plug Material 7075-T6 Anodized Aluminum
Wetted Materials Buna-N Rubber
Molykote 111 Compound
7075-T6 Anodized Aluminum
PUR Foam
FKM

Electrical

DC Resistance @ 20°C 0.127 Ω/m 0.146 Ω / m
Insulation Resistance @ 500 VDC > 1640 MΩ/km -
Voltage Rating 300 VDC

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Related Products

FreightDescription
Freight notes

[Shipping Description]

Within two days after receipt of the order (excluding the holidays), the Commissioner will confirm the order with your Union or SMS.

This product is non-DIY goods, 4 floor below the floor fee, 5 floor above each additional 200 yuan, no recovery services.

Delivery area: Taiwan Island, the outer island does not receive a single. Due to special restrictions (mountain, township, town, village), the stairs are too small to move upstairs and other factors, leading to the delivery, the company has the right to ship.

large furniture distribution is not easy, delivery time to 7 to 14 working days, before delivery logistics company will confirm with you delivery time.

Hualien area (except Hualien City), Taitung area, Pingtung (except Pingtung City) and some remote areas (mountain) area, you need to receive additional freight, travel less delivery of about 10 to 20 Working days, remote areas determined by the logistics company. (You can order the order, follow up by the commissioner and your offer)

To protect the work of the logistics staff, the seller does not provide hanging service, if the crane or other hanging way lifting, the cost will be paid by the buyer.

because of the large furniture assembly, distribution problems, not the general arrival of goods quickly, can not specify a specific time delivery, the driver will be informed before the arrival of the day before you so that you do not have all day at home and other goods, so as not to waste you The precious time.

no recycling furniture service, for recycling furniture can contact the local cleaning team to recover, free shipping clearance line 0800-085-717

If you have any questions after receiving the goods, please contact us within 4 working days from the date of receipt of the goods and return it within seven days from the date of receipt of the goods in order to enjoy the After service.

If you do not return the status of this order, you purchase the goods invoice will receive the goods from seven to ten working days, please pay attention to the receipt box.


[post-purchase considerations]

The company is working from Monday to Friday 10: 00-18: 00, national holidays and other non-working hours to suspend online customer service, we still attach great importance to your valuable advice and any advice, we recommend that you can use the consultation form We will reply to you as soon as possible during working hours.

wake you, after each order is established, you can not manually change the details of the goods or merge orders, please be sure to confirm the order before the order details and order amount.

If you have any questions after receiving the goods, please contact us within 4 working days from the date of receipt of the goods and return it within seven days from the date of receipt of the goods in order to enjoy the After service.

If you do not return the status of this order, you purchase the goods invoice will receive the goods from seven to ten working days, please pay attention to the receipt box.

If you have any questions after receiving the goods, please contact us within 4 working days from the date of receipt of the goods and return it within seven days from the date of receipt of the goods in order to enjoy the After service.

If you do not return the status of this order, you purchase the goods invoice will receive the goods from seven to ten working days, please pay attention to the receipt box.