THE 138m cargo ship Beluga Finesse entered the Tamar River yesterday carrying machinery and parts for Gunns' $2.2 billion pulp mill.
It is understood that the Beluga Finesse was transporting a range of equipment, including a turbine for the mill's co-generation plant.
A spokesman for Gunns said such equipment would allow the mill to produce green energy.
A large crowd of people gathered on the foreshore at George Town to watch the ship cruise past on its way to the number-five berth at the Bell Bay port.
Police monitored the temporary exclusion zone set up around the ship, as a group of about 10 pulp mill protesters unfurled a large "no mill" banner on the foreshore.
The protesters decried the "boat that brought the pulp mill" to the State.
Wilderness Society spokeswoman Ruth Groom said the arrival of the equipment would only stiffen the resolve of those opposed to the project.
"It is just more money lost for Gunns, as far as we can see," Ms Groom said.
"That stuff is going to be sitting on the wharf rusting for the next decade if we have anything to do with it."
However, others at the George Town foreshore yesterday were there to greet the ship.
Long-time George Town resident Don Shields said he believed the boat would bring a better future for younger Tasmanians.
"I've come down here to support the pulp mill," Mr Shields said.
"It will be a terrific thing, not just for the State, but for George Town too. It's great for the next generation - lots of young people will get jobs out of it."
Unloading of the cargo ship was expected to continue last night, with the ship due to leave port at 6am today.
While Gunns is yet to secure a joint financial backer for the mill, leading business commentator Robert Gottliebsen has cited "European reports" indicating that two major pulp makers are keen to enter a joint venture with Gunns to build the mill.
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