In Singapore, only two of the four blades of a 183 m long tanker needed to be cropped. The other two propeller blades had suffered small cracks and dents along their trailing edges.
Because the damage to these blades was limited, cropping was not required. The divers ground away the cracks and polished the edges of the blades to prevent further cracking.
Elsewhere, a 220 m long tanker in Amsterdam had lost the tip of one of its propeller blades. The opposite blade had not been damaged, but it was also cropped to keep the propeller’s balance.