the availability of stronger "Live Oak" in the US.
By the turn of the nineteenth century the European military and commercial ship building industry had used enormous quantities of that continent's natural wood supply. Its forests were seriously depleted.
By the time of the French revolution, according to Fernand Braudel, Europe's merchant shipping fleet stood at 3,372,029 tons, all wood of course. I do not have the figures for Britain of France's navies, but every fleet in no matter what country, required for it's construction the destruction of enormous expanses of forest. The construction of those fleets required ten different woods, ranging from fir to oak to walnut, and only the Baltic could supply the crucial masts which it did so on a vast scale.
Surprisingly, no one though to exploit the immense forests of the New World - until much later.
Not only were the forests used for ship building, they were vital for every day life at the time. Most things were made of wood, and it was still being consumed at an alarming rate as a source of fuel, i.e., at that time France was burning 20 millions tons annually to heat itself domestically, and more and more was being burned to feed the new industries (coal had not yet made its mark). That figure is just for fuel, NOT for building supplies, millions of tons were used in urban construction, also.
Rural people who relied on the forest as a way of life became terrified at the rapid loss of their environment, and would at the very least protest and worst openly riot at the rout, and the authorities did take note. The Green movement is not new.
It takes at least thirty years to replace a forest and for most this became very evident by the time of the Napoleonic wars, but perhaps much sooner in the limited resources of Great Britain which had built its merchant and naval fleets at a rapid rate since the 16th century. To this extent the ships already built had to last, and then to last a bit longer.
The loss or degradation of the natural resource of suitable wood, to some degree, might explain the poor condition of the Royal Navy's ship at that time.
a British ship of the line suddenly sank with all hands. It was determined the ship was so old that the hull just disintegrated.
Engines tire as their components wear, hulls suffer fatigue and fractures, wiring degrades, computers become obsolete and parts for them are no longer in production. eventually it becomes cheaper to build a new ship than keep the old one running.
San Jacinto has 33 years service under her belt. That's about it for a non-carrier.