In what situations at sea might SOLAS regulation XI-2/8.1 on master's discretion for ship safety and security apply?

(1) switching off the AIS when the master considers it to be prudent to do so in a particular area; (2) operating at a higher security level than that set by the flag State when the master considers it prudent to do so in a particular place or area; (3) searching personnel seeking access to the ship (e. g. pilots, mooring personnel, etc. ) when the master considers it prudent to do so.