Continued… Part VII – Strategic Importance of Submarine Cables, Coastal Cable Routes and International Cable Routes.

The last 2 posts were the updates of Part V where I have posted description and additional diagrams that I hope will give clearer picture of typical submarine cable system.

Today I’ll discuss on why the submarine telecommunications cables are so important to us and how these submarine cables look like on global telecommunication map.

Strategic Importance of Submarine Cables

  • Submarine cables are the backbone of the international telecommunications network
  • Almost 100% of transoceanic Internet traffic is sent via submarine cable
  • The submarine cable network is designed to be resilient, however faults can disrupt activities we take for granted – banking, airline bookings, internet shopping, education, health, defense, and of course, our communication with one another
  • Many Governments now recognize the strategic value of submarine cables and are taking stronger measures to help protect them

Coastal Cable Routes

Some key notes on coastal cables are as follows:

  • Near-shore, cables need protection from shipping, fishing & other activities
  • To reduce risk, cables are identified on nautical charts and may be placed within a “protection zone”
  • A zone is a legal entity where activities harmful to cables are banned
  • Cable burial in water depths to 1500m is also a key protective measure

The following coastal cable route map shows the “protection zone” for Southern Cross cable terminal, New Zealand.

Protection zone for Southern Cross cable terminal, New Zealand

Protection zone for Southern Cross cable terminal, New Zealand. ---------Courtesy: Telecom New Zealand

The following map shows the new protection zones (yellow) proposed for Australia where value of submarine cables to economy is assessed at A$5 billion. Wow!

New protection zones (yellow) for Australia

New protection zones (yellow) for Australia ------Courtesy: Australian Communications & Media Authority

International Submarine Cable Routes

Global communications depend on a network of submarine telecommunications cables which connect the land-based networks of many countries. The following international submarine cable routes maps demonstrate how the world’s oceans are wired.

International Cable Routes

International Submarine Cable Routes ----Courtesy: Global Marine Systems Ltd

>> Follow the following link to download free a larger image size (1034×576):

(File Name: http://www.ziddu.com/download/10811946/nationalCableRoutes-courtesyGlobalMarineSystemsLtd.jpg.html)

Below is the International Submarine Cable Routes map for 2009.

Submarine Cable Map 2009

Submarine Cable Map 2009 -----Courtesy: TeleGeography

>> Follow the following link to download free a larger image size (1600×1200):

(File Name: http://www.ziddu.com/download/10811947/GlobalSubmarineCableMap2009_1600x1200.jpg.html)

Source: International Cable Protection Committee Ltd, TeleGeography

To be continued… Part VIII – International Submarine Cable facts and figures.

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