Paul Allen beyond Microsoft: wrecked warship finder and ultimate sports fan

The Microsoft co-founder engaged in years-long missions for sunken ships and nurtured the Seahawks to three Super Bowls

• Paul Allen, Microsoft co-founder, dies

Aside from his fame as Microsoft co-founder and philanthropist, Paul Allen's life centred on a twin obsession with sport and the fate of warships sunk in critical battles during the war in the Pacific.

In recent years, Allen bankrolled several expeditions that resulted in the discovery of Japanese and US vessels that would otherwise have remained, largely forgotten, on the ocean floor.