A handy and simple tool to determine in a minimum time what is really needed as tug assistance, is the Bollard Pull Calculator which calculates in an approximate way the total required tug power for ships in various conditions of wind and current. This tool can be loaded as an app on the smart phone.
GNSS interference has become a growing challenge in the Baltic Sea, affecting maritime navigation, aviation, and critical infrastructure. While numerous datasets and services, such as gpsjam.org, spoofing.skai-data-services.com, and flightradar24, report high-altitude GNSS interference based on ADS-B data, there is a significant lack of studies focusing on ground-level interference.
A collection of action from the St Johns Bar Pilot Association In the early 1800′s as the commercial ports along the St Johns River began to develop, a select group of brave and skilled seafarers would row to sea to meet arriving cargo sailing ships. These daring individuals would use their extensive local knowledge to safely guide the sailing ships across the treacherous sand bars that guarded the river entrance. This was the origin of the St. Johns Bar Pilots. Initially it was a bit of a...
