Look out below. It you look below you are not apt to see that tree tailing on you from above.
Loggers work with overhead dangers from above.
Historic wood ship maintenance, repair and preservation should be directed at what takes place below the deck. Look out below. With rainy days, with water coming inside almost as fast as the rain is falling outside, the problem is below deck. U.S.S. Constitution , in 1949, exhibited extensive damage from marine borers, insects and decay. In the 1970's much hull planking was replaced from the top of the bulwark to a few feet below the waterline.