Inadequate operating company guidance on underkeel clearance led to the April 2023 grounding of a bulk carrier in Lake Huron, the National Transportation Safety Board (NTSB) said Tuesday.The 667-foot-long, self-unloading bulk carrier John J…<p><p>https://www.marinelink.com/news/bulk-carrier-grounded-due-inadequate-515723</p></p>