Oil sands opponents who have used their public relations muscle into fighting the Keystone XL pipeline that would flow from Canada into the United States are turning their sights on two pipeline proposals in British Columbia.

Although neither the Trans Mountain nor the Northern Gateway projects cross the border in land, the American arm of the conservation group Forest Ethics said the pipelines will result in an additional 700-plus tankers traversing the waters off the Pacific coast.

“From pipelines to tankers to crude-by-rail, we’re facing an onslaught of new oil proposals, many of them toxic oilsands oil, that would turn the Pacific Northwest into a giant shipping lane for oil, gas and for coal,” spokesman Matt Krogh said at a news conference Tuesday in Seattle.

“This is a cross-border question. It has cross-border impacts.”

Opponents of oilsands expansion have fought bitterly against the proposed Keystone XL pipeline in the United States, stalling for several years the project that would deliver oilsands bitumen from northern Alberta to refineries on the U.S. Gulf Coast.

A final decision from President Barack Obama on Keystone is expected in the coming months, Krogh said, and attention is turning toward the impact that oil shipments to the B.C. coast will have, including tankers and an increase in oil-by-rail from Canada.

“You’re seeing the first steps in an international wall being created that’s actually going to stop tar sands export,” Krogh said.

The campaign was launched with a website tarsandssos.org, featuring real-time tracking of all tankers in and out of Kinder Morgan’s tanker terminal in Burnaby — the terminus of its Trans Mountain pipeline from Alberta.

On Tuesday, the website showed the Liberian-flagged Aqualiberty and the U.S.-flagged Sea Reliance moored in Burrard Inlet.

Krogh said the website is the start of a cross-border campaign to oppose the Canadian projects.

The Northern Gateway pipeline proposed by Calgary-based Enbridge would deliver 525,000 barrels of petroleum a day to a tanker terminal in Kitimat, on the north coast of B.C.

Kinder Morgan’s proposed expansion of its existing Trans Mountain line would increase its capacity from 300,000 barrels a day to 890,000.

An official from Kinder Morgan was not immediately able to comment.

A federal panel weighing the Northern Gateway terminal will issue its report to the federal cabinet by the end of the year, and Kinder Morgan is expected — after much discussion of its expansion plans — to officially file an application for the Trans Mountain line later this year.

Federal government officials were in British Columbia last week to meet with First Nations groups that have staunchly opposed Northern Gateway, and Enbridge officials met over the summer with leaders from more than a dozen communities along the pipeline route.

The company is on a veritable charm offensive as the clock ticks down on the panel report, releasing a new series of newspaper, radio, television and online ads that promise “a better pipeline.”

In a conference call with investors on Tuesday, Vern Yu, Enbridge’s senior vice-president of business and market development said the company expects a decision from the federal cabinet by mid-2014 — and they expect it to be a decision that will be challenged by project opponents.

“We expect that there would be some appeals to that decision and that would take us into early 2015 and at that point we would be able to start construction, which would allow for somewhere around a 2018 in-service date,” Yu said.

“Obviously that is a lightening rod project where we are actively working on building more support in B.C. for the project.”

CEO Al Monaco said Enbridge has done well engaging communities affected by Northern Gateway, but broader issues around oilsands development and general skepticism over energy projects have become bigger and bigger factors in the public debate.

Monaco said he remains confident Northern Gateway will be built because it’s “so important to Canada.”