In The Narrows current velocities exceed 5 knots at times. At the N end of The Narrows the current sets N most of the time on the E side of the passage and S most of the time on the W side.
The current in Hale Passage attains a velocity in excess of 3 knots at times. The E (ebb) current is stronger than the W (flood) current.
Pitt Passage, between Key Peninsula and McNeil Island, connects Drayton Passage and Carr Inlet. Only the passage E of Pitt Island is used by small craft with local knowledge. In this passage the ebb (N current) is stronger than the flood and attains a velocity of 2.5 knots or more at times.
Drayton Passage - Estimated current velocities of 1 to 2 knots occur at the SW end of the passage.
Steilacoom - there are tide rips which, with a wind opposing the current, are dangerous to small boats.
In Pickering Passage the flood current sets from Case Inlet toward Hammersley Inlet and the ebb in the opposite direction. The strongest currents are near the S end where velocities reach 2.5 knots at times.
Peale Passage - The current at times attains a velocity of 2.0 knots in the narrow part of the passage, and sets N on the flood.
The currents in Dana Passage frequently attain velocities of 3 knots or more.
Tide rips are said to occur in Squaxin Passage. The usual velocity of the current is about 1.5 knots.