Sea Launch was a multinational spacecraft launch company founded in 1995 that provided orbital launch services from 1999–2014. The company used a mobile maritime launch platform for equatorial launches of commercial payloads on specialized Zenit-3SL rockets from the former mobile/floating oil drilling rig renamed Odyssey.
Number of employees
|Parent||S7 AirSpace Corporation|
By 2014, it had assembled and launched thirty-two rockets, with an additional three failures and one partial failure. All commercial payloads were communications satellites intended for geostationary transfer orbit with such customers as EchoStar, DirecTV, XM Satellite Radio, PanAmSat, and Thuraya.
The approach Sea Launch used was to assemble the launcher on a purpose-built ship Sea Launch Commander in Long Beach, California, USA. The assembled spacecraft was then positioned on top of the self-propelled Odyssey floating launch platform and moved to the equatorial Pacific Ocean for launch, with the Sea Launch Commander serving as command center. The sea-based launch system means the rockets can be fired from the optimal position on Earth's surface, considerably increasing payload capacity and reducing launch costs compared to land-based systems.
Sea Launch mothballed its ships and put operations on long-term hiatus in 2014, following the Russian military intervention in Ukraine.[clarification needed] By 2015, discussions on disposition of company assets were underway, and the Sea Launch partners were in a court-administered dispute about unpaid expenses that Boeing claims it incurred.
In September 2016, S7 Group, owner of S7 Airlines, purchased the assets of Sea Launch. Launch services were to potentially be provided by S7 Sea Launch, a US subsidiary. However, after moving the two former Sea Launch ships from California to Vladivostok, the S7 Group chairman stated that the program was indefinitely suspended. As of 2020, a replacement for the Zenit launch vehicle, with its Ukrainian first stage, was expected to be years away.
Sea Launch was established in 1995 as a consortium of four companies from Norway, Russia, Ukraine and the United States, managed by Boeing with participation from the other shareholders. The first rocket was launched in March 1999.
In June 2009, the provider of the Sea Launch service, Sea Launch Co. LLC, filed for Chapter 11 bankruptcy protection. Sea Launch asserted that it would "continue to maintain all normal business operations after the filing for reorganization." On August 6, 2010, Energia, which already owned 25% of Sea Launch, announced it planned to acquire a controlling interest of 85% in the company. As a result, the company planned to begin land-based launches from the Baikonur Cosmodrome in early 2011, while sea-based launches to be resumed in September 2011.[needs update]
Sea Launch emerged from bankruptcy effective October 27, 2010. Energia Overseas Limited, a Russian corporation, is majority owner of the reorganized entity, with Boeing and other American companies retaining minority shares.
In mid-2014, following the 2014 Russian military intervention in Ukraine and the subsequent unrest in the eastern part of the country, there were a number of Russian media reports that indicated Sea Launch may be planning to inactivate the Odyssey launch platform. The company formally denied those reports in June 2014, indicating it is continuing to buy Zenit rockets from Ukraine, and is still promoting its launch services to the international market, even in August 2014.  However, in August 2014, Sea Launch conducted a reduction of their staff and removed from operating status both the Commander and Odyssey vessels in order to reduce operating costs during a period where they have no launches scheduled until late 2015.
In July 2015, industry experts stated that the Chinese government was considering the purchase of the Sea Launch command ship and launch platform assets, but this was not confirmed by either company or Chinese government officials.
In September 2015, Boeing won a court judgement against the Russian and Ukrainian partners within Sea Launch. The decision set up a court trial planned for November 2015 where Boeing would argue that it was not properly reimbursed for US$356 million of expenses incurred while operating the Sea Launch launch system. This litigation was decided in favor of Boeing on May 12, 2016.
In September 2016, S7 Group, owner of S7 Airlines announced they were purchasing Sea Launch. The launch and assembly ship Sea Launch Commander arrived in Russia on March 17th, 2020 and was moored at the Slavyanka Shipyard after customs procedures. The launch platform Odyssey arrived at the shipyard on March 30th.
In August 2020, Deputy Prime Minister Yuri Borisov told the media on the sidelines of the Army-2020 forum that the floating spaceport Sea Launch, currently based at Russia’s Slavyanka port in the Primorye Territory, will be restored. The news release indicated it would require about 35 billion rubles (roughly $470 million) to restore the platform. Funding was not confirmed at the time of the release.
Borisov indicated that before the floating spaceport left its port Long Beach, California, the United States in accordance with its laws removed all equipment from the command ship and the floating platform. "It’s mostly equipment responsible for positioning, based on GPS technologies. We will be able to replace it with GLONASS solutions. As for the launch system itself, in other words, the equipment needed for bringing the rocket to and placing it at the launch pad and automatically fueling the tanks, all this is done through Russian technologies," Borisov said.
In June 2020, the CEO of Russia’s space corporation Roscosmos, Dmitry Rogozin, said in his column in Forbes magazine that Russian specialists would have to exert considerable efforts to restore the floating spaceport Sea Launch to operation. He said that before its handover to the company S7 all space launch control equipment was dismantled.
Ownership and businessEdit
Sea Launch was founded by four companies from four countries, which shared the original ownership of Cayman Islands-registered Sea Launch. After reorganising from Chapter 11 bankruptcy in 2010, a majority share of the company was acquired by Russian interests.
|Founding company||Nation of origin||Initial share
(1995 to 2010)
(2010 to 2018)
|Energia||Russia||25%||95%||Block DM-SL rocket stage (it is used in the Zenit-3SL rocket as its 3rd stage)|
|Boeing Commercial Space||United States||40%||2.5%||System integration, payload enclosures (nose-cone that protects the satellite during launch)|
|Aker Solutions||Norway||20%||2.5%||Launch platform (Ocean Odyssey) and command ship (Sea Launch Commander)|
|SDO Yuzhnoye / PO Yuzhmash||Ukraine||15%||0%||Two-stage Zenit rocket (used as Zenit-3SL's stages 1 and 2)|
The project was helped by Hughes Space and Communications, which in 1995 signed the first contract for 10 launches and 10 options, valued at $1 billion, and Space Systems/Loral, which then signed a five-launch contract.
Total cost of the project has been reported at $583 million in 1996. Chase Manhattan arranged about $400 million in loans in 1996. Loans were later guaranteed against political instability in Russia and Ukraine through 2012 by the World Bank (up to $175 million, of these up to $100 million in Russia and up to $75 million in Ukraine) and the European Bank for Reconstruction and Development (up to $65 million).
Sea Launch has a reciprocal agreement with Arianespace and Mitsubishi Heavy Industries through the Launch Services Alliance, providing assurance in case either company's system is not able to launch a payload for reasons of reliability, capacity, backlog, or otherwise. This was used for the first time in 2004 when Arianespace's Ariane 5 had to reschedule a group of launches for reliability reasons.
In 1999, shortly after the company was founded, the Sea Launch consortium claimed that their launch-related operating costs would be lower than a land-based equivalent due in part to reduced staff requirements. The platform and command ship have 310 crew members.
The first demonstration satellite was launched on March 27, 1999, and the first commercial satellite on October 9, 1999. Sea Launch has launched 36 rockets with 32 successes and 1 partial success as of March 2019. The first failure, of a Hughes-built communications satellite owned by ICO Global Communications, occurred on the second commercial launch on March 12, 2000, and was blamed on a software error that failed to close a valve in the second stage of the rocket.
A second rocket failed to launch on January 30, 2007, when Zenit-3SL exploded on the launch pad with the Boeing 702 NSS-8 satellite on board, seconds after engine ignition.
All Sea Launch missions to date have used the custom-designed three-stage Zenit-3SL launch vehicle, capable of placing up to 6,000 kg (13,000 lb) of payload into geosynchronous transfer orbit. Sea Launch rocket components are manufactured by SDO Yuzhnoye / PO Yuzhmash in Dnipro, Ukraine (Zenit rocket for the first and second stages); by Energia in Moscow, Russia (Block DM-SL for third stage); and by Boeing in Seattle, United States (payload fairing and interstage structure).
Sea Launch rockets are assembled in Long Beach, California. The typical assembly is done on board the Assembly and Command Ship (the payload is first tested, fueled and encapsulated in the nearby Payload Processing Facility). The rocket is then transferred to a horizontal hangar on the self-propelled launch platform.
Following rocket tests, both ships then sail about 4,800 km (3,000 mi) to the equator at 154° West Longitude, , in international waters about 370 km (230 mi) from Kiritimati, Kiribati. The platform travels the distance in about 11 days, the command ship in about eight days.
With the platform ballasted to its launch depth of 22 m (72 ft), the hangar is opened, the rocket is mechanically moved to a vertical position, and the launch platform crew evacuates to the command ship which moves about five kilometres (3.1 mi) away. Then, with the launch platform unmanned, the rocket is fueled and launched. The final ten seconds before launch are called out simultaneously in English and Russian.
|2||1999-10-09||DIRECTV 1-R||3.5 t||success|
|3||2000-03-12||ICO F-1||2.7 t||failure|
|6||2001-03-18||XM-2 ROCK||4.7 t||success|
|7||2001-05-08||XM-1 ROLL||4.7 t||success|
|8||2002-06-15||Galaxy IIIC||4.9 t||success|
|10||2003-08-07||EchoStar IX/Telstar 13||4.7 t||success|
|11||2003-09-30||Galaxy XIII/Horizons-1||4.1 t||success|
|12||2004-01-10||Telstar 14/Estrela do Sul 1||4.7 t||success|
|14||2004-06-28||Telstar-18||4.8 t||launch anomaly|
|17||2005-06-23||Intelsat IA-8||5.5 t||success|
|18||2005-11-08||Inmarsat 4-F2||6.0 t||success|
|19||2006-02-15||EchoStar X||4.3 t||success|
|21||2006-06-18||Galaxy 16||5.1 t||success|
|22||2006-08-22||Koreasat 5||4.9 t||success|
|27||2008-05-21||Galaxy 18||4.6 t||success|
|28||2008-07-16||EchoStar XI||5.5 t||success|
|29||2008-09-24||Galaxy 19||4.7 t||success|
|30||2009-04-20||SICRAL 1B||3.0 t||success|
|31||2011-09-24||Atlantic Bird 7||4.6 t||success|
|32||2012-05-31||Intelsat 19||5.6 t||success|
|33||2012-08-19||Intelsat 21||6.0 t||success|
|34||2012-12-03||Eutelsat 70B||5.2 t||success|
|35||2013-02-01||Intelsat 27||6.2 t||failure|
|36||2014-05-26||Eutelsat 3B||6.0 t||success|
NSS-8 launch failureEdit
On January 30, 2007, the Sea Launch Zenit-3SL rocket carrying NSS-8 and 500 tons of fuel exploded on launch. Available imagery shows a fireball much larger than the launch platform at sea level.
Since the launch pad platform is vacated by all engineers during the automated launch process, there were no injuries. On February 1, 2007 Sea Launch released a statement detailing its status.
It is believed that the failure was caused by a foreign object being ingested by the engine turbopump, causing the rocket to crash immediately.
On February 3, 2007, photographs of the damage were posted on internet forums. The launch platform damage is mostly superficial, though blast deflectors underneath the launch platform were knocked loose and were lost when they fell into the sea.
Repairs of the launch platform were completed in September 2007. The Sea Launch platform underwent repairs in Canada, docked near CFB Esquimalt, just west of Victoria, British Columbia, and departed on July 31, 2007. Both vessels returned to their home port in Long Beach, California.
Concerns and investigationsEdit
During project development in 1998 Boeing was fined US$10 million by the United States Department of State for technical violations of the Arms Export Control Act in handling of missile technology while dealing with its foreign Sea Launch partners. This is the largest civil penalty of its kind, although it could have been as much as US$102 million. The Sea Launch project was suspended for two months during the investigation.
The Department of State found that between January 1994 and January 1998 Boeing illegally exported "defense articles" and "defense services", although no national security breaches were determined. The violations were uncovered by Boeing's internal investigation.
At about the same time United States Customs Service attempted to block Sea Launch from bringing Zenit-3SL rockets (classified as missiles) into California for assembly without a munitions import licence. The matter was settled in the company's favour.
Also in 1998, 16 member states of the South Pacific Forum issued a communiqué asking the United States to suspend the project indefinitely until and unless their environmental concerns are remedied. It was mostly criticized by the island nation of Kiribati.
The project was criticized in 1997 by International Transport Workers' Federation (ITWF) for registering its sea vessels in Liberia. In May 1999 Sea Launch reached an agreement with the ITWF, which allows crew members to use ITWF inspectors.
Using existing Zenit infrastructure at the Baikonur Cosmodrome, the "Land Launch" system is based on a modified version of the Sea Launch vehicle, the three-stage Zenit-3SL rocket. Land Launch's Zenit-3SLB vehicle addresses the launch needs of commercial satellites weighing up to 3.5 metric tons (3.9 short tons). The two-stage Zenit-2SLB is also available for lifting payloads up to 13 metric tons (14 short tons) to inclined low Earth orbits.
Advantages of equatorial ocean-platform based launchesEdit
Advantages of equatorial launch site:
- The rotational speed of the Earth is greatest at the equator, providing an extra launch "boost".
- The need for a "plane change" to the zero degree inclination of geostationary orbit is eliminated, providing a major extra launch "boost". This allows 17.5–25% more mass to be launched to geostationary orbit than the same rocket launched from Cape Canaveral, which is at 28.5 degrees north latitude.
- Any orbital inclination could be reached, thus (for example) combining in one launch site the attainable inclinations of both Cape Canaveral and Vandenberg.
Advantages of ocean-based over a conventional land-based launch platform:
- An ocean launch reduces risks related to launching over populated areas, providing better safety to third parties.
- Absence of range conflicts with other launch systems and a near total absence of ship or overhead air traffic that would constrain launch.
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