On Thu, 08 Aug 2019 21:26:39 +0100, Vir Campestris wrote:

Their autopilot is cleverer than just set altitude. When they are
dunking anti-submarine sonar they have to hold a constant altitude
_above_ _the_ _sea_. Which is a bit interesting on a rough day!

Easier when it's calm. As the Dambusters managed...

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