Consider the following from the HMS Bounty II thread:
"Recent Developments: Tall Ship Bounty was restored, initially at the Boothbay Harbor Shipyard in 2002, with replacement of 100% of the vessel below the water
line including the bottom planking, garboards and 95% of all frames. A new rudder
was also fabricated and installed. The work was overseen by the USCG and Bounty’s own naval architect. The boat is constructed of double futtock white oak.
"Subsequently, in Phase Two in Bayou La Battre, Alabama
in 2005 all square sails
along with all standing rigging
of the ship were replaced.
"In the Final Phase in 2006 the Bounty arrived in Boothbay Harbor again to have all ribs on the vessel replaced and new stern post inserted. During this time the vessel was replaced 100% from the waterline up and 100% of frames and bulwarks, as well as the stern gallery, stern post and beak being replaced. An additional Brest Hook was added. Approximately 80,000 pounds of lead through out the bilges was removed and a 65,000 pound keel
shoe installed which added an inch and a half of freeboard. A new interior
layout was introduced including the great cabin, a new galley
, an increase in the number of cabins from six to ten and more storage
space. The result of the three phases was to return Bounty to the original glamorous ship that Marlon Brando loved so much.
"All running gear
is new, and she has new props (54 x 42) and 3 ½ shafts. The John Deere engines were new in 2004 with Twin Disc, 6.1:1 gearboxes. Fuel
is in 4 steel tanks
and is over 4000 gallons in capacity. The ship has two water
makers capable of making 1500 gallons each per day, and two 1000 gallon water
stainless steel tanks
. She has two 35 KW John Deere generators, one is new in 2007 and the other was rebuilt in 2007. She is hauled every year to have her bottom painted."
The HMS Bounty II was built in 1961. This kind of extensive rebuilding was uncommon in the age of sail. Most vessels that required that kind of work were sent to the ship breakers instead. That is why I point out that the gross tonnage of a wood vessel 100+ years old is a tiny fraction of what was actually launched when the vessel was new.