Showing posts with label telecommunications. Show all posts
Showing posts with label telecommunications. Show all posts

Sunday, July 15, 2012

Poor communication kills maritime VSAT opportunities


According to a recent maritime satcom conference, both VSAT system vendors and users needed clear lines of communication and understanding when it comes to the use, limitations, and management of satellite communications.

The GVF Conference on Broadband Maritime in London last month covered topics like the market size and the relative merits of the different technologies of maritime satellite communications. But the spotlight ended up focusing on the lack of communications between maritime communications vendors and system users.


Demetris Makaritis, Fleet Manager, Navigator Gas, reported his experience and opinion that VSAT services are intermittently available and often not operational. He cited the example of one vessel reporting 60% down time for its VSAT system in March and April. He did allow that he would happily pay more for bandwidth- that is, if he gets his money's worth.

Probing into the matter revealed that Navigator Gas was using an antenna that wasn't up to the company's requirements. Apparently, Navigator Gas did not inform the satellite communications provider of its exact requirements, so the vendor provided a VSAT model that was not up to the business' expectation.

Similarly, Kaushik Roy, DPA and Company Security Officer for MOL LNG, claimed that the VSAT service was unreliable. Officer Roy did keep Fleet Broadband as a backup, but he also complained that he couldn’t get through to the ship if the crew used up all the capacity for downloading books or movies.

The solution was painfully obvious: Traffic prioritization. However, MOL LNG apparently did not have any staff who possessed knowledge about prioritizing traffic.

Navigator Gas and MOL LNG are major maritime operators. Navigator Gas is the owner-operator of a dozen modern, massive semi-refrigerated gas carriers. Meanwhile, MOL LNG is part of the 910-vessel-strong Mitsui OSK Lines. MOL LNG itself has a hand in transporting 25% of the world’s Liquid Natural Gas (LNG.) Yet such serious misunderstandings still ensued between them and the vendors/providers of VSAT services.

The bigger picture reveals that there are roughly 9,000 commercial ship owners worldwide. (This approximate does not include fisheries and leisure.) Half of that number own just one ship. And these small operators would fare even worse in trying to understand satellite communications because they lack the resources of big companies.

A conference participant asked why the ship or company's radio officer was not involved in the buying process. The participant presumed that the radio officer would know what the ship's technical communications requirements were.

However, Kuba Szymanski of Intermanager revealed that the post of Radio Officer had been gone for many years, a casualty of obsolescence after computers superseded wireless.


The demise of the Radio Officer position meant that VSAT buyers did not have anyone who had a grasp of telecommunications. Deprived of relevant expertise, the buyers would not know the right questions to ask to obtain the service they need.

The conference also noted that there were reportedly many cases of satcoms providers who often lacked information about the unique needs of its customers.

The GVF Conference recommended that buyers needed to be properly educated in VSAT and other forms of satellite communications. Maritime academies currently do not provide courses on this critically important skill.

In addition, Richard Roithner of Euroconsult pointed out that telecoms represent less than 1% of a ship's operating expenses, so it could not demand a lion's share of the typical mariner's expensive education.

Suggestions to rectify the situation involved the satellite communications vendors taking a hand in educating themselves and their customers. Vendors were recommended to understand the maritime market's specific needs and to educate their customers on the capacities of their offered systems.

VSAT History

The concept of the geostationary orbit was originated by Russian theorist Konstantin Tsiolkovsky, an Imperial Russian and Soviet rocket scientist and pioneer of the astronautic theory. He wrote articles in space travel at the turn of the century. 

In the 1920s, Hermann Oberth and Herman Potocnik, aka Herman Noordung, described an orbit at an altitude of 35,900 kilometers. Its orbital period, or the time for it to make one complete orbit about another object, exactly matched the Earth’s rotational period, making it appear to hover a fixed point on the Earth’s equator. 

Arthur C. Clarke contributed to the understanding of satellites through an article published in Wireless World in October 1945 titled “Extra-Terrestrial Relays: Can Rocket Stations Give Worldwide Radio Coverage?” In this article, Clarke not only determines the orbital characteristics/elements, or the parameters required to uniquely identify a specific orbit, necessary for a geostationary orbit, but also discusses the frequencies and power needed for communications. 

Live satellite communications was developed in the sixties by the National Aeronautics and Space Administration (NASA), named Syncom 1-3. It is transmitted live coverage of the 1964 Olympics in Japan to viewers in the United States and Europe. Soon after, on April 6, 1965, the first commercial satellite was launched into space, Intelsat I, nicknamed Early Bird. 

The first commercial VSATs were C band (6 GHz) receive-only systems by Equatorial Communications using spread spectrum technology. More than 30,000 60 cm antenna systems were sold in the early 1980s. Equatorial later developed a C band (4/6 GHz) two-way system using 1 m x 0.5 m antennas and sold about 10,000 units in 1984-85. 

In 1985, Schlumberger Oilfield Research co-developed the world’s first Ku band (12-14 GHz) VSATs with Hughes Aerospace to provide portable network connectivity for the oil field drilling and exploration units. Ku Band VSATs make up the vast majority of sites in use today for data or telephony applications. The largest VSAT network (more than 12,000 sites) was developed by Spacenet and MCI for the US Postal Service.

See: SDI is No "Star Wars"