World's Submarine Cable Map

Submarine Cable's are underwater cables. Here is Map of Submarine Cable or Underwater cable.

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Top 5 Longest Submarine Cables and their Maps

Submarine Cable are all over world. Here we are basically talking about first kind of submarine cable i.e. Submarine Communication Cable. These cable are main source of internet data transfer which laid under sea or ocean water. These cable helps to transfer data from one point of land which are normally continents or countries to other point of land. Huge numbers of submarine cable are laid between America and Europe continent. Length of Submarine cable are from highest 39000 KM to  1 KM . Here is the list of top 5 Submarine Communications Cable which carry internet and private data and laid under salt water.

Top 5 Longest Submarine Cable

1. SeaMeWe - 3 (39000 KM)

SeaMeWe-3 is cable which mean South East Asia - Middle East and Western Europe is longest underwater cable. The cable got completed in late 2000. This cable is 39000 KM long and cover almost 70 % of world Map.

Map of SeaMeWe -3

Click on Map to view original Map.
You can get more information about this cable from seamewe3.com

More details :

Can be found in - Wiki and here

2. Southern Cross Cable Network (SCCN) (30500 KM)

Southern Cross Cable limited is a Bermuda based cable company  which operate this second most longest under sea cable . This undersea cable is 30500 KM long and cover so many locations in Australia, United States , Fiji and New Zealand .

Owners : Telecom New Zealand, SingTel Optus, Verizon.

Map of Southern Cross Cable

More information about this cable can be found in following links  :
Official SCCN website : Click Here
Wikipedia for SCCN   : Click Here
Submarine Cable Map : Click Here

3. China - US Cable Network (CHUS) (30476 KM)

With 30476 KM of length CHUS is third longest undersea cable network in world. Laid under sea water cable between China and USA this cable is providing service to major countries like United States, China, Japan, and Taiwan.
This cable also established in year 2000 by its owners   AT&T, KDDI, China Telecom,  KT, NTT, Level 3, SingTel, PCCW, Sprint, Telekom Malaysia, Telecom New Zealand,Tata Communications,Chunghwa Telecom,  LG Uplus,Telstra,  Rostelecom, SingTel Optus, Orange,Softbank Telecom, Verizon.

Map of CHUS

Wikipedia for CHUS                    : Click Here
Submarine Cable Map of CHUS  : Click Here

4. FLAG Europe-Asia (28000 KM)

With 28000 KM in length and covering maximum part of Asia and Europe is fourth longest Cable. Connecting important places of Egypt, Jordan, Spain , United Arab Emirates, Saudi Arabia , Korea , Rep. Lantau Island, Japan, Mumbai, Italy , Malaysia , United Kingdom, Thailand and China. Owned by Global Cloud Xchange this cable start working from 1997.

Map of FLAG Europe Asia Submarine Cable (FEA)

5. South America -1 (25000 KM)

Telefonica constructed this 25000 KM long undersea cable which is fifth largest submarine cable in this world and cover all coastal countries of south america. Countries which are served by this cable are  

Chile , Colombia, United States , Brazil , Argentina , Peru, Guatemala  and Ecuador.

Map of South America -1 

So this is list of top five longest underwater submarine cable. Hope you like this article and this article helps you. Please don't forgot to share your views with us by commenting below. 

Submarine Cable Map updated for Year 2014

Submarine Cable Maps

Submarine Cable Map is map of submarine communication cable all over the globe which connect each continent of this world to another. These cables are main medium of internet and carry internet data. These cables are laid under water so also called under water cable.

Here is High definition updated Maps of Submarine Communicational Cables.

This the highest resolution Submarine Cable Map. Resolution of this map is 7264 × 5315.

Click The Image to view the full size image of Submarine Cable Map. Or right click on Map and click open image in new tab. Right click and save image to your PC or desktop.

Some More Maps of Submarine Communication Cable

Global Communication Cable and Satellite Map 2000

This map has resolution of 2000X2000. Click to inlage image or download image to your computer by right click and save as.

Submarine Cable Map 2011

This map has resolution of 3000 X 2160. Released in 2011 by TeleGraphy and sponsored by GBI. 

Global Traffic Map 2010

Global Internet Map by Cisco

Submarine Cable Map by TeleGeography in year 2008

 Submarine Cable Map of 2013 by Telegraphy Sponsored by  Telecom Egypt

 

Chronological Chart of Submarine Cable History by Telecom Egypt

Submarine Cable Map by TeleGraphy 2009 

Submarine Cable Map by GBI in 2011

2012 Submarine Cable Map 

Disclaimer :
All Maps mentioned or pointed in this page is belongs to their respective owner. All Maps are used under fair use policy.

Licensing :

All data and images presented in TeleGeography’s Telecom Resources are licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported License. Direct links to our site are greatly appreciated.

High Voltage Direct Current (HVDC)

For bulk transmission of electrical power between two station a high voltage direct current is used refer as high - voltage , direct current (HVDC). This type of power transmission system is more efficient and cost effective as compare to AC transmission systems for long distance transmissions.

For underwater cables or also called submarine cable this type of transmission system is very much helpfull to reduce the overall cost and power loss between transmission. As wire under water consume too much power while charging and recharging its capicitance per cycle.

For long distance current transmission HVDC is always cost effective and benificial than AC current system. However for short distances again HVDC is more usefull over AC by various other advantage factors of direct current (DC).


For AC unsynchronised systems HVDC allowed very efficient power transmission when power flow can be controlled without affecting the phase angle between source and destinace load. Even in case of rapid change HVDC can stablized immidiatly. HVDC can also transfer power between two power grids where there is diffrenct in power frequncies.

Examples of HVDC

In 1930s between sweden and Germany
in 1951 between Moscow and Kashira
During 1954 a 20 MW system between Gotland and Sweden
Between Xiangjiaba and shanghao ( 2nd largest largest 2071 Km)

Rio Madeira in brazil (largest 2,375 KM)

What is Submarine Power Cable ?

Submarine Power Cables are those cables which are used to laid down under water and carrying current. These cables are generally laid under sea or oceans that means salt water thats why called as submarine. Calling submarine doesn't mean that these wire cable can't be used under fresh water. These wire are also used for transmiting power under fresh water like lakes and rivers.

These cables used for connecting power supplies from mainland to islands. Many uropian countries are using these type of power cables. These cable use to carry electric power benith sea or ocean water.

Technologies Used in Submarine Power Cables

Normally power cable carry AC (Alternative current ) which mainly suffer from two type of loss. One is reactive loss and Other is resistive loss. Reactive loss os due to natural capicitance and inductive properties of wire. DC transmission wires only sufer resistive losses.
AC current means more current and less voltage (Just for seek of understanding). As current increases, power consuption by wires will also increase. As power consummed is I*I*R where I is current and R is resistance. So this conclude that if we use AC transmission than we will need more expensive wires and insulators in other way we will need chip equipments like transformers because voltage diffrence is less.

But when distance increases use of costly wire and towers are not a wise choice just to transmit AC currents. In other hand if we use DC current with High Voltage diffrence it will be more economical. For lesser distance the AC current is good and one can use expensive wires but for lare distance cost of wire starts to increase the totall cost of power transmission. This makes high-voltage direct current (HVDC) better option.


The line losses due to capacitance is greater so reactive loss increase. If we use AC than it will be not benificiary. Hence for underwater transmission system HVDC is used for shorter distances as compare to it used in land as it is economically more advantageous.

High Voltage direct current (HVDC) uses high voltage direct current for electric power transmissions. For underwater current transmission HVDC is less expensive even for shorter distance. HVDC prevent the power loss while underwater cable charges and discharges its capicitance each cycle.

Type of Submarine Power Cable

There are mainly two type of submarine power cable on basis of power transmission.

Alternative Current Cable and Direct Current Cable

Alternative Current Cable (AC) 

Submarine power cable are those which carry AC power and transmit it from one source to another source laid under water. This type of cable is used when distance between source and destinationis less.

Direct Current Cable 

Submarine Power Cable which carry direct current between its source and destination. These type of cable is used when distance betwen source and destination is much larger. A HVDC is used to transmit power between two station where submarine

What is Undersea cables or Underwater Cable

Sea Cable Map or Map of Submarine Communications Cable