Yep it's hard stuff. Various dense Eucalypt species ( gum) were and still are used for boat building and marine structures here. It's heavy stuff and very dense.
Steel hulls are lighter than those built of dense hardwoods for the same size and displacement. The Eucalypt hardwoods despite being tough are prone to rotting if fresh water is trapped anywhere. But they are very stable timbers.
Barques and barquentines, brigs and brigantines, whalers, barges, coastal lighters were often framed and planked below the WL with these hard dense
timbers. But only the steel ones survive, often after years as a breakwater or wreck.
Some parts of iron tea clippers from the 1800s are still intact , in Royston BC. Irving Johnsons Yankee went ashore on Rarotonga, on a reef totally exposed to the open sea, in 1964. I walked around her in 1973 and she was basically intact and in one piece. How many hurricanes, at the rate of several per year on average, had she been thru in that time? Trismus , a sistership to Moitessiers Joshua, blew ashore on Rangiroa in 1975 , pounded there for ten years, before the locals got her off and, with minimum work, used her to ship coconuts around the lagoon. None of these boats had a full time crew maintaining them, as did the wooden boats mentioned.
Another sisterhip, Pygmalion blew ashore in Spain, and after days of up to 80 knot winds on an exposed lee shore , was still bone dry in the bilge with zero damage, when they lifted her of and moved her to a travel lift and relaunched her.
Any wooden boat would have broke up in 20 minutes in these conditions.