GPS jamming.

[motorbiking]

Seems jamming and spoofing is on the rise.

MGN 719 (M+F) Operating in GNSS denied and degraded environments

Guidance on the risks of GNSS degradation and denial, and measures maritime stakeholders can take to improve resilience and operational safety.

www.gov.uk

 

[Ihavenojob]

Seems jamming and spoofing is on the rise.

MGN 719 (M+F) Operating in GNSS denied and degraded environments

Guidance on the risks of GNSS degradation and denial, and measures maritime stakeholders can take to improve resilience and operational safety.

www.gov.uk

Is that something to do with the jammers police are supposedly using in harbours to stop people reporting the boat landings?

 

[fillyboy]

Caused problems in Israel a little while back.

https://www.timesofisrael.com/israeli-and-lebanese-users-of-dating-apps-are-made-strange-bedfellows-by-war-baffled-gps/

 

[motorbiking]

Is that something to do with the jammers police are supposedly using in harbours to stop people reporting the boat landings?

I haven't heard that, but if they are - they would be acting illegally.