slow boat
If you really mean slow boat, I am shortly travelling 28 days
to Port Klang (Kuala Lumpur), by boat, then a week in Bangkok,
finally 15 days on re-positioning Cruise liner to NZ.
I usually reposition each European winter, this time I am not
in a hurry. Total cost about 10K € for two people, shore excursions excepted, so not too bad really.