Guidance on Inspection, Repair, and Maintenance of Wooden Hulls
US Coast Guard NVIC 7-95:
CHAPTER 3: MATERIAL
A. SHIPBUILDING WOOD
Wood is an engineering material. Douglas Fir, Southern Yellow Pine (long leaf), and White Oak furnish most of the wood used for boat and shipbuilding in the United States
. Of these, Douglas Fir is the predominant choice
due to availability and relatively rapid growth.
1. When requirements call for strength, moderate to good decay resistance and ability to hold fastenings well (frames, keels, stems, etc.), the following woods are most commonly used:
Southern Yellow Pine (long leaf)
2. Where light wood, which is easy to work and is warp and decay resistant, is required (planking, etc.) the following woods are most commonly used:
Cedar (Port Orford, Northern White, Western Red and Alaska)
Tangile (Philippine hardwood)
3. Where light, easily worked and strong woods of moderate to low decay resistance are required, the following woods have found favor:
There are many other varieties suitable for boat use. These are listed together with their properties in The Encyclopedia of Wood and Wood - A Manual for its use as a Shipbuilding Material (References 1 and 10).
B. BENDING WOODS
Unseasoned White Oak is the choice bending wood ...