| Name | Type | Slots | Level | Description |
| Ill-gotten Goods | Consumable Items | 44 | ||
| Improved Rudder Tackle 1 | Rudder | 0 | A high quality rudder that improves the turn rate of your ship. | |
| Improved Rudder Tackle 2 | Rudder | 12 | A high quality rudder that improves the turn rate of your ship. | |
| Ingot, Brass | 0 | Ingots of brass are produced by melting copper with zinc; a small quantity of tin is included to make the resulting brass corrosion-resistant. | ||
| Ingot, Copper | 0 | |||
| Ingot, Gold | 0 | Ingots of gold. This precious metal has driven the colonization of the New World for two centuries. | ||
| Ingot, Iron | 0 | Ingots of pig iron. | ||
| Ingot, Lead | 0 | |||
| Ingot, Silver | 0 | Ingots of Silver. This precious metal has driven the colonization of the New World for two centuries. | ||
| Inspected Iron Ingots | 0 | |||
| Interpres Phraseologiae Metallurgicae | Recipe Book | 0 | Lazarus Ercker's famous treatise on analytical metallurgy. | |
| Iron Ship Fittings | 0 | |||
| Ironwood Bracing | Internal | 10 | Internal braces of the rare ironwood provide greater structural strength. | |
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