Governor Linda Linger and its administration decided on Monday to deliver a newly signed law, which permits Hawaii Superferry to sail while the state conducts an environmental review of the ship.

Hawaii Superferry is a high-speed passenger and car ferry service ship, which cruising speed reaches 37 knots, or about 42 mph.

This law comes after last month Maui court decision that the Superferry should not sail until the state will conduct an environmental impact survey of the ship.

This new law allows Superferry to sail from Oahu to Maui and Kauai while complying with some 40 conditions set by the Lingle administration on Monday.

Among conditions, Superferry has to sail on a speed limit of 25 knots, or 28 mph, when the ferry is sailing in the Hawaiian Islands, between January 1 and April 30, during the humpback whales' breeding season. The same speed limit applies when the ferry is in depths of less than 100 fathoms or about 600 feet.The vessel should stay at least 500 meters from any sighted whale. For that, the ship should post two whale lookouts to monitor life marine and prevent the ship’s crew against whales’ collisions.

Hawaii Superferry officials stated that “the operating conditions outlined by the governor are reasonable and fair under the current circumstances.”

Environmentalists are concerned not only of the whales’ fatal strikes with the ferry, but also about possible injuries to passengers in case of whale collision. They ask that Superferry should sail with almost half of the state recommended speed, when in depths of 100 fathoms or 600 feet.