Big Nose

Arklow Fern heading to Warrenpoint (Ireland) from Salford down the Manchester Ship Canal "The big ditch"
The bulbous nose is normally under water so she must have been running near empty here, but you can see she must have hit something large or heavy by the big dint on her nose.

The nose alters the water flow over the ships hull reducing drag - its all complicated air bubbles surface tension stuff but the noses increase fuel efficiency on large ships 12-15% generally.