You guys are doing it all wrong. I sailed south with 64 lbs of Starbucks beans under the V berth. Here's how you do it.
1. Buy a generator.
2. Buy a 1000amp hour bank of AGMS
3. Charge fully.
4. Install Xantrex Charger/Inverter...2000watts
5. Buy Krups Coffee Grinder
6. Buy Pur water filter
7. Buy Krups Coffee/Espresso-maker
8. Brew
9. Hoist the Coffee Burgee
Simple!
