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5
TOW CABLE
The tow cable serves a dual purpose. It is the strength member used for towing and the
electrical conduit between the surface and sub-sea electronics. A single coax cable is
required. Most standard marine coax cables are adequate; the cable quality dictates maximum
cable length. Both lightweight Kevlar and armored tow cables are available depending on
survey speed and operating depth.
6
DEPLOYMENT
The 4200-FS towfish may be deployed in two possible configurations depending on the users
tow and handling requirements.
Option 1:
Standard, using a Kevlar tow cable for shallow surveys at speeds less than 8 knots.
Option 2
: High Speed (8-10 knots) or deep surveys using armored tow cable.
6.1
O
PTION
1
(K
EVLAR TOW CABLE
)
A custom Edgetech tow arm with a Saf-T-Link feature is used.
The tow arm is built using two components, which are held together using a sacrificial shear
pin.
FIGURE 6-1: SAFETY LINK
Shear Pin
