Do they provide food for passengers who are travelling in ship?

[blogger]

I'm planning to go to Andaman by ship so can u please tell me about ship i.e. (me going alone)
1. Are there single cabins available or not?
2. Do deluxe cabin will be given to one person or I have to share with stranger?
3. I need to take food or they will provide food for us?

Are there any Restoration, shops, etc to buy food or they will provide food. (Chennai to Andaman)
Note: I’m talking about NICOBAR SHIP....Chennai to Andaman...of this month (Jan, 2013) may be 15th!!!