On this site: ::: deckee.com/topic/types-of-antifouling-paint
There is statement :

? Boats doing less than 10 knots should seriously consider upgrading to the hard (contact leaching) anti-fouling's as value for money is obvious. (Topflight Red, Black or Blue).

I always use soft (Altec #5, Jotun SeaGuardian), was I wrong? or -"hard (contact leaching)"- is in fact called "soft"?.
Thanks for your time to correct me.