The River Mersey is a busy shipping lane with a huge variety of vessels arriving every week.
Keen ship spotters always love it when a cruise ship sails in and, following the pandemic, it was one of the first signs of the tourism industry coming back into the city. Liverpool has already welcomed dozens of ships this year, with many more on the horizon.
Last year, a total of 90 cruise ships on round-Britain tours visited the port and people living along the river will be well accustomed to hearing the horns of the floating hotels ringing out over the Mersey. But some may not know the number of bursts and their length of the horn blasts means different things.
