In KTB's the U-Boat's speed was rarely inserted, instead the engine state was referred to: KF (Kleine Fahrt - dead slow, Langsame Fahrt - slow etc). I've added both the speed and engine state every now and then.
The grid references are 4 digits as was the norm. In patrol 2 there are additional grid references which some Kaleun's used to give a more detailed location: TR (top right), BL (bottom left), TC (top centre) etc.
The wind and sea state uses the Beaufort scale. 'Charts Add On' mod has been a massive asset for this.