A deeper channel has been opened in Baltimore, allowing five of seven cargo ships stuck in the harbor to leave. The new channel is 35 feet deep, a significant improvement over previous temporary channels. Crews have cleared over 2,900 tons of debris to make the channel accessible. Officials hope to reopen the main channel in May after removing the grounded ship, the Dali, which caused the bridge collapse. The mayor and city council have called for the ship’s owners to be held liable for the economic impact of the closure.