Repair work on the Aratere Interisland ferry has uncovered
cracked rudder shafts.
The vessel has been out of action since last November when it
lost a propeller during a Cook Strait crossing.
Repairs to the ship have so far included installing new
shafts, old propellers and stabilisers, in preparation for
sea trials, KiwiRail said.
"When reinstalling the rudders this week, ongoing checks
identified a crack in the ship's port and starboard 'rudder
stock' - that is, the shafts which turn the rudders."
Interislander technical staff and the classification society
Det Norske Veritas were assessing options for repairs,
Any necessary work would be undertaken in Singapore.
The replacement ship Stena Alegra would continue to operate
in the meantime, KiwiRail said.