SUBSIM Radio Room Forums - View Single Post - My submarine suddenly appallingly slow, no idea why. Please help.

BristolBrick · 06-01-18, 06:59 PM

Sailing an IXB in '42 suddenly it cannot go fast, underwater flank speed is 3 knots, slow is 1 knot, and above the water ahead standard is 7 knots, flank is 10. I have upgraded it with the turbocharged engines too, I have plenty of fuel left, it's in heavy seas but that doesn't explain it since it's been in much heavier seas going much faster, and it's still so appallingly slow 50m underwater.

On 44% hull integrity but otherwise everything is functional, this started mid patrol by the way, I'm now going back to Lorient at a speed of slow.

I've also checked with the engineer, the compressed air, oxygen, fuel and battery levels are all fine, it's not silent running and the pathetic speed persists in recharge mode.

Please help, luckily when it started I was north of ireland, so I can make it back home, the range also was cut down spectacularly, in a type IX with about 55% of the tank left the range has gone to 3000km at ahead standard.

06-01-18, 06:59 PM	#1
BristolBrick Seaman Join Date: Jan 2016 Posts: 42 Downloads: 14 Uploads: 0	My submarine suddenly appallingly slow, no idea why. Please help. Sailing an IXB in '42 suddenly it cannot go fast, underwater flank speed is 3 knots, slow is 1 knot, and above the water ahead standard is 7 knots, flank is 10. I have upgraded it with the turbocharged engines too, I have plenty of fuel left, it's in heavy seas but that doesn't explain it since it's been in much heavier seas going much faster, and it's still so appallingly slow 50m underwater. On 44% hull integrity but otherwise everything is functional, this started mid patrol by the way, I'm now going back to Lorient at a speed of slow. I've also checked with the engineer, the compressed air, oxygen, fuel and battery levels are all fine, it's not silent running and the pathetic speed persists in recharge mode. Please help, luckily when it started I was north of ireland, so I can make it back home, the range also was cut down spectacularly, in a type IX with about 55% of the tank left the range has gone to 3000km at ahead standard.