Slow to submerge...

[Slick Rick]

I am in a new career in a type VII B.....I just stopped to refuel and take on provisions before heading back to St. Nazaire.....on my way up just west of Gibralter I was forced under by some Hurricanes....I ordered the alarm and it took forever to get under....I had a good head of steam going also.....and then I find it extremely hard to get past sixty meters for some damned reason.....well I finally level off at sixty five and then find that the sub will not stay trimmed at depth......my question is.....Is this a random problem generated by Sub Cmdr??? I have never experienced this behaivor before....and my crew is fairly experienced to boot......Just wondering...