Spire has offices in San Francisco, Glasgow and Singapore and specialises in maritime surveillance.
Improved maritime data has positive implications for services including search and rescue, combating cargo piracy, monitoring illegal fishing and trade at large.
Rocket Lab chief executive Peter Beck said his company was focused on enabling customers "to achieve amazing things. Spire are quick thinkers and world-class problem solvers."
The Electron rocket makes extensive use of carbon fibre, new battery technology and 3-D printing to cut weight and reduce cost.
At 18m tall, Electron is capable of delivering a 150kg payload to a 500km sun-synchronous orbit.
Spire are quick thinkers and world-class problem solvers.
Rocket Lab's Electron vehicle was created to provide frequent, affordable launch opportunities for the growing small satellite market. Like many technologies, satellites have continued to decrease in size creating the need for smaller rockets.
Beck said the Mahia launch site has the ability to facilitate a rapid rate of launches and a wider range of orbital inclinations than any other site in the world.
Spire joins NASA and Moon Express as customers recently signed to fly on Electron launch vehicles.
Rocket Lab was formed nine years ago and is a privately funded American company, with major investors including Khosla Ventures, K1W1, Bessemer Venture Partners and Lockheed Martin.
See a Google Map showing the Mahia Peninsula Rocketlab launch site here:
