if you want simple, just look for those coffin shop, and ask about the processes and pricing for processing your father's body when he passes away. So later on you have a rough idea what to do if he does pass away.

Because when a person is dead, there are lots of procedure need to follow one, such as getting death certificate, apply a time slot in public crematorium etc. I think such process costs about 8-10k ?

Instead of scatter the ashes into the sea, suggest just buy a place in columbarium, less than 2-3k only..

Also, make you go to at the right place, means if your dad from kwong tong, then go to kwong tong cemetery, hokkien then hokkien cemetery..