BREAKING NEWS: A ship is on fire at Lyttelton.
A Fire Service spokesman said they had been alerted at 5.40pm that a large ship was on fire in the dry dock on Godley Quay.
Six fire engines and a command unit were at the scene battling the blaze.
"The fire was well ablaze when they got there and they're now working to get it under control," the spokesman said.
"We're unsure what caused the fire yet; it's early days. It appears no-one was on the ship or is injured."
Emergency services were asking people to stay away from the area while they worked, he said.
"It's quite a large operation."
The Lyttelton road tunnel has been closed to all traffic, apart from emergency vehicles.
Lyttelton resident Anthea Struthers said there was smoke everywhere.
"It does look very dramatic," she said.
Resident John Fitzgerald said he saw a "lot of smoke" coming from a fishing vessel, the Ocean Breeze, in the dry dock.
"There's a lot of smoke and a lot of activity going on down there,'' he said.
''A huge plume of smoke is coming from the stern and the bow."