- Clothwork? (level 0) - 20 Rotten Flax
- [Ferry Construction]? (level 0) - 4 Tar
- [Flax Processing]? (level 0) - 20 Flax
- [Exploration Travel]? (level 1) - 2 Leather
- Navigation?
- [Project Management]? (level 1) - 2 Canvas, 6 Rope
- Cooperage? - Requires Beer Brewing
- Firebuilding?
- [Project Management (Second degree)]? (level 7) - 4 Canvas, 12 Rope