Well, the top of the hole cropped in the Fitz' side is in the waterline, while the top of the Crystal's bulbous bow is several meters below the waterline.
The Crystal's bulbous bow cannot damage the Fitz side in the waterline! It is several meters away from the Fitz' side several meters below waterline.
The contact was at the Fitz' deckhouse >8 m above the waterline. The Fitz' superstructure and hull side down to the waterline are then undamaged.
Let's await pictures of alleged underwater damages before cropping.
BTW I doubt divers did any cropping or temporary repairs under water.
Normal procedure is to drydock the ship and then fit scaffolding for close up inspections, etc.