Shifting offshore sandbanks pose unique navigation hazard
via cambridge.org
Short excerpt below. Read at the original source.
Sandbanks can shift position during winter storms, but sonar mapping means charts can now be updated immediately Offshore sandbanks are a particular navigation hazard because, unlike rocks and reefs, they have a habit of shifting position during winter storms. The Goodwin Sands is a 10-mile (16km) bank off the coast of Deal in Kent, close […]