Boeing is to build three Ka-band satellites to add to Inmarsat’s current mobile satellite services fleet.

Under the contract, the firm will develop three 702HP commercial spacecraft, the Inmarsat-5 series, with 89 Ka-band beams to operate in geosynchronous orbit with flexible global coverage.

The satellites will provide Inmarsat with the ability to adapt to shifting subscriber usage patterns of high data rates, specialised applications and evolving demographics over a projected 15-year lifetime.

The Inmarsat-5 spacecraft will be compatible with the Ariane, Sea Launch, Proton and Atlas launch vehicles, and launch services will be procured by Inmarsat.