The deepest I ever made is 600ft, it was a few miles off of Singapour after a harbour recon. I'd seen a Heavy Cruiser n taken a pot shot at it whiles bugging out, afterwards i was chased by DDs and tried to make like a hole in the water, didnt work... Shattered the my aft fish bowl and the engine room so I ended up sinking down to the bottom and sat there until repairs we're finished. On the down side.. I ran out of oxygen at 100 ft and died of asphyxiation
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With Regards,
Krauter