[โ€“] 77 points 9 months ago (2 children)

Bouyancy is based on how much water is displaced, not amount of air inside the container. 66x12x13=10,296 cubic inches. Fresh water density is about 0.0361 lb/in^3 so that case has to displace at least 372 lb to sink.

Metric would be better for this but we're talking about a stinger missile here.

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