The Army Corps of Engineers will provide an update at the end of this month about the study it is conducting as part of the proposed Charleston Harbor deepening project.

The public meeting will be from 5:30 to 8 p.m. April 30 at Mark Clark Hall at The Citadel. The presentation begins at 6 p.m.

The Army Corps held its last meeting about the harbor study in December 2011. The federal agency said it will be presenting new information and that the public will have a chance to comment in writing or and electronically.

The study is part of the process to dredge the harbor’s shipping channel to 50 feet from 45 feet.

The Port of Charleston has said the $300 million project is critical to its future because shipping lines are increasingly using larger, heavier vessels that require deeper waterways.

Also, more of these so-called mega-ships will call at East Coast ports once the expansion of the Panama Canal is completed around 2015. Earlier this month, the 1,154-foot Axel Maersk became the longest container vessel to drop anchor at the Port of Charleston.