Eclipsed in public memory by its smaller and less capable counterpart, the PBM Mariner was a significant step forward in the world of seaplanes. Being, at its inception, the largest twinengined flying boat in the world, why has this classic aircraft fallen by the wayside?

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0:00 2:18 Intro
2:19 6:37 Prototype Stage
6:38 10:41 Variants and Early Use
10:42 13:40 Stories and Exports
13:41 15:48 Summary