Lockheed Martin Ventures said Friday it is investing in Ocean Aero, the developer of the Submaran unmanned maritime vehicle. The Submaran is a class of unmanned underwater and surface vessels for ocean observation and data collection, Lockheed said. It is powered by wind and solar energy and can travel for months. Teledyne Technologies has been an investor in Ocean Aero since 2014, according to Lockheed. Lockheed said it partnered with Ocean Aero on a technology demonstration last year. The new...