Handy Ship Chart

[Bilgepump]

                 Crew   Hull Hit  Sail Hit          Deck     Broadside                  Full
Hull Class     Capacity  Points    Points   Cargo  Cannons    Cannons     Buy   Sell   Repair
Light Sloop        3      2400       800       3      2          3        100     50      10
Light Galleon      6      3600      1100       7      4          5        300    150      19
Light Frigate      8      4200       900       5      8          5        800    400      26
Sloop              6      4200       800       6      4          5       2000   1000      40
Galleon            8      7200      1400      11      8          9       4000   2000      69
Frigate           10      8400      1400       9     10          7       8000   4000      89
War Sloop          9      7200      1000       9      8          7      20000  10000      82
War Galleon       10     10800      3100      16     10         12      40000  20000     153
War Frigate       12     12600      2600      12     14         10      60000  30000     180

I grabbed the info from the online manual, plus CaptainMonkeys' excellent Buy/Sell/Repair thread.