I had another issue which I had noticed before and noticed again last night, namely the sub takes much too long to deccelerate.
Say I dive to PD while going at standard speed (15 knots), the sub will be doing 6-7 knots when it gets to PD. If I then order a lower speed, say one-thirds ahead or specific 1-2 knots speed or even All Stop, the indicated speed will deccelerate very slowly.
Even taking into account the inertia of the boat, decceleration of the boat underwater given the friction of the water should be very quick.
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