Thailand to India

Hello all,
My boyfriend and I are crossing Eurasia by bicycle (Shanghai-Paris) but seem to have gone off-course, as we've ended up in Thailand. Anyhow, the plan is now to get to India, since we'd rather not retrace our tracks back North. Since Myanmar is off-limits for land crossing, that leaves us with only options to fly or find a boat. We'd much rather boat it, and are naturally willing to pay.
I lived on a sailboat as a child, and know how to sail, but that's about the limit of our experiences. We're both mid-twenties.
Any info at all on cargo ships that take passengers, sailboats willing to rent out a berth, etc. would be much appreciated.
Thanks!