Sharki cutless bearing
When I changed the bearing on our Mango, I found it to be a standard bearing, available in any well-equipped marine shop. The change was very easy, I also froze it down prior to installation like others have mentioned.
I have a drawing of the bearing, it is supposed to be the same for Maramu and Mango. I will upload it if I find out how-to;)
Regs Bent, S/Y Karma