According to a Bloomberg report, Houston Ship Channel pilots halted boarding inbound and outbound vessels overnight after fog reduced visibility on the approach to the largest U.S. petroleum port, citing the Coast Guard Vessel Traffic Service. About 12 ships were waiting to enter the port as of 6 a.m. local time after pilots suspended boardings at 8:30 p.m. yesterday, Levi Campbell, a watch supervisor with the service, said in an interview. Some 14 ships were waiting to leave Houston.