There is not an uniform policy about it and each country has their own rules and demands but normally they accept the ones from the banner of the boat
, providing they have on that country a sensible regulation on safety equipment
(on the ones that have regulation the demands are not so different).
If you have several types of flares (several of each type)with a valid date you should be alright. If you have flares out of date dispose them. That can have a contraproducente effect on the police.
Need also a liferaft
, fire extinguishers (valid), life jackets, a medical
box and in some cases an Epirb
, but probably you have all that.