2015 large lock maintenance, Hiram M. Chittenden Locks, Seattle, Washington. Looking roughly west inside the lock; the gate in view is at the middle of the large lock, and is regularly used to allow a use of the lock at half size; the full lock is used only for very long ships. This is in the eastern half of the big lock: the upper gate of the lock is behind us. Crows on the floor of the lock.