Fathom Spool 300


The Fathom Spool is a rugged and easy to use spool that simplifies tether storage and management for your BlueROV2 and / or Blue Rov2 by MDC! Full IP67 water resistance, 8-wire slip-ring, and integrated quick connectors make it tough enough to use at almost any dive site while remaining easy to transport.

Does not include tether! A Fathom-X Tether Interface (FXTI)topside box is required for use, as well as a tether with an installed Binder 770 connector.

The Fathom Spool is a rugged and easy to use tether spool for the Fathom and Fathom Slim ROV tethers. An integrated slip ring provides connections for up to eight tether wires, even while the spool is rotating. It’s quick to set up and use in a variety of conditions. Full IP67 water resistance means it is splash-proof, and a reversible locking handle makes it easy to transport.

Check out the new product video for the SpoolFXTI, and Fathom Tether:



The spool also includes an adjustable drag brake to provide fine control over the resistance while spooling and unspooling. A locking feature in the spool side panels allows the tether to be secured for transport.

The crank handle can be removed with a single thumb screw, allowing it to be flipped around and reinstalled for easy transportation and locking of the spool.

The Fathom Spool comes as a partially-assembled kit with some simple assembly required. It has a Binder 770 connector on both the inside and outside of the spool so that to install the tether, you just plug it into the inner Binder 770 connector, attach a few restraints, and start spooling! An included 8 meter (26 ft) extension cable provides a connection from the outer connector on the spool to your FXTI and computer.

The Fathom Spool is available in two configurations- a standard width version capable of storing up to 150m of Fathom ROV tether, and a double wide large version capable of storing up to 300m.

Does not include tether! A Fathom-X Tether Interface (FXTI) topside box is required for use, as well as a tether with an installed Binder 770 connector.


  • 1 x Fathom Spool partially assembled kit
  • 1 x 8 meter extension cable with Binder 770 plugs


Specification Table

Length 366 mm 14.41 in
Width (Standard) 350 mm 13.78 in
Width (Large) 534 mm 21.02 in
Height 349 mm 13.74 in
Weight (Standard) 2.22Kg 4.89 lbs
Weight (Large) 2.89 Kg 6.38 lbs
Maximum Fathom Tether Length (Standard) 150 m 492 ft
Maximum Fathom Slim Tether Length (Standard) 540 m 1772 ft
Maximum Fathom Tether Length (Large) 300 m 984 ft
Maximum Fathom Slim Tether Length (Large) 1080 m 3543 ft
Dust and Water Resistance IP67  
Included Cable to FXTI Topside Box 8 m 26.25 ft

2D Drawings

Fathom Spool (Standard)

Dimension Fathom Spool

Fathom Spool (Large)

Drawing Fathom Spool



Blue RoboticsMarine Distribution & ConsultingMDCTether spoolFathom Spoolwinchumbilicalslip ringBlue ROV2ItaliaBobina di cavezzabobina verricelloombelicaleanello di scorrimentoFathom Spool 300


Prodotto Nota Stato Prezzo
Blue ROV2 by MDC Blue ROV2 by MDC
7.999,83 €

Foglio dati prodotto

BlueROV2 (kit) BlueROV2 (kit)
from 3.233,33 €
BlueROV2 Heavy Configuration Retrofit Kit BlueROV2 Heavy Configuration Retrofit Kit
535,38 €
Fathom Spool 150 Fathom Spool 150
472,92 €
Fathom-X Tether Interface (FXTI) Fathom-X Tether Interface (FXTI)
159,62 €
Fathom-X schede di interfaccia per cavo Fathom-X schede di interfaccia per cavo
163,55 €

Foglio dati prodotto

Cavo Thruster Cavo Thruster
Binder Bulkhead Connector 770 Binder Bulkhead Connector 770
12,50 €
M10 Penetrator 6mm M10 Penetrator 6mm
4,25 €
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