Subsea telecommunication cables
have a very long history. Since the installation of the world's
first submarine cable across the Dover Strait in 1850, Subsea
cables have been essential to the worlds communications
Bandwidth, capacity and
connectivity are historically the drivers behind construction of
However, the new buzzword is
"Latency". Latency is quite simply the time delay of signals
traversing across the network.
So why is latency so important?
Low latency has always been an
important consideration in telecoms networks but recent changes in
applications within many industry sectors have brought low latency
right to the forefront of the industry. The finance industry and
Algorithmic Trading, or Algo Trading as it is known, is a commonly
quoted example. Here latency is critical and to quote Information
Week magazine "[A] 1-millisecond advantage in trading applications
can be worth $100 million a year to a major brokerage firm".
Quite simply the way to reduce
latency is to make the cable shorter, and the best way of making
the cable shorter, is to make it straighter.
There are currently two new "low
latency" Trans-Atlantic cables being planned that will connect the
USA to England and the USA to Eire.
Another low latency cables are
planned to connect the UK to Japan by installing a cable across the
Arctic Circle above Canada through the North West passage. The cost
of installing such a cable is estimated at £700Million to
|Planned Cable Link Through the Arctic