Nice drawing Lazer_one but to pick up on a few things if I may, the ships name appears too far forward, because the 'V' in Investigator needs to be slightly left of centre of the hatch just below the 'I', you're missing three larger holes in a row in the side of the hull, for the ropes to go through to tie up the ship to the side of the pier, and 7 smaller rectangular holes and some other details in that area appear off, you blue appears to be to pale and your green looks a bit bright as well and arcs a bit to early as well compared to the photo. Would a little shading under the platforms bring out the superstructure a bit? There's other details, but I'll leave that for you to make out in the photos.
Your MPSV07 class is a little wrong in details as well but I didn't want to say before, the superstructure is orange in the photo but red in your drawing and you're missing the giant white 'RESCUER' on the hull as well, and the white circles at the water line are too low.
Hope these help.
All the best
Sachsen, Bayern class battleship
Württemberg, Bayern class battleship
SMS Goeben, Moltke class battlecruiser
SMS Blucher armoured cruiser
MD Scale, 4 Pixels : 1 Foot
Official German Parts Sheet
German Capital Ship Projects of The First World War