Are you sure your depth gauge is measuring in feet and not in meters ?
Have you suffered any prior damage or in other words is your hull integrity 100% ?
Are you located in shallow waters?
BTW 250ft (~75m) is the test depth not the crush depth.
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- Oh God! They're all over the place! CRASH DIVE!!!
- Ehm... we can't honey. We're in the car right now.
- What?... er right... Doesn't matter! We'll give it a try anyway!
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