The proposed extension would have been funded by Marine and Safety Tasmania initially with maintenance costs falling to the council after completion.

On Tuesday council discussed a motion which would have the council lodge a development application for the extension resulted in a tied vote.

Deputy Mayor Jenny Woods and councillors Cherly Arnold, Mike Symons and Grant Robinson voted for the proposal.

While Mayor Debbie Wisby and councillors Rob Churchill, Annie Browning and Keith Breheny voted against.

The tie meant council voted against the motion.

Those against cited concerns about the financial burden of future maintenance and depreciation which they believe should be shouldered by MAST.

Those for argued it was would improve safety and was within council's core business as outlined in their strategic plan.

Trigonia Seafoods owner Marcus Walkden said the extension would have helped ease congestion.

"The boat ramp can be very busy and congested at times, the upgrade would have helped people launch and retrieve their boats," he said.

"Allowing them more room to tie their boats up while they park and retrieve their trailers and [would] provide a safer environment for commercial fishermen and recreational fishermen with families and the like."

Recreational fisherman and Bicheno resident Grant Brockman said he was disappointed with the decision.

"I think it is terrible that they didn't back it ... it just becomes a big bottle neck at the dingy ramp when it is busy," he said.

"I have seen up to 50 dingies out there during the busy times and up to about 10 people waiting to get in and out.

"If they had have done those extensions it would have alleviated a lot of that problem of people having to park their dingy in the way while they went up and got their trailers and cars."

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