Here's the Sierra Club's objections to the Superferry: http://www.hi.sierraclub.org/superferry/index.html

And on the B.I., there are concerns that Superferry will introduce the Varroa Bee Mite from O'ahu, and decimate the B.I's bee populations and honey production: http://the.honoluluadvertiser.com/ar...704130332.html And: http://www.mauinews.com/story.aspx?id=32716

There's still efforts being made in the legislature to "float it", so it's still possible.