Fine boat wood working traditional pegged planking keel and planks laid

CARA MEMBUAT PERAHU KAYU || proses awal untuk membuat sebuah perahu kayu tradisional - YouTube

What type of wood are they using?
I am impressed how they join the planks together with pegs edge to edge.

 

Maybe Phillipine Mahogany or some other Indonesian hardwood. But not likely softwood the way they beat on it.

 

For planking most likely bangkirai (shorea levis) aka. yellow balau, a very dense and hard wood. Even denser and harder is ulin (eusideroxylon zwageri), endangered but very popular. Merbau (intsia) an teak (tectona grandis) are also used if available.

 

Part 2 for the same boat
(1) CARA MEMBUAT PERAHU KAYU part 2 || proses awal membuat sebuah perahu kayu - YouTube

(1) WOOD BOAT MAKING || KM. STEENKOLEN FISHING ADVENTURE - YouTube
Here is another one further along, though it looks like maybe the same place with several boats in progress.
They build the outer hull first, then they put in the framing.
I would think such a boat would be much more durable and stronger than the wood boats production builders turned out here up till the early 70's.
I imagine only a few have the skill to build this way. Imagine getting all that planking properly drilled and lined off.

The yellow balau is a very durable wood.
Yellow Balau Decking | Bankirai Decking | Yellow Balau Exterior Deck Supplier (novausawood.com)

 

PROSES AWAL HINGGA PEMASANGAN TULANG PERAHU KAYU - YouTube
The types of wood used, whatever they are, I am unfamiliar and likely the same for the other videos.
I think for Bone he means the interior framing wood

From the vid description

Keel from ironwood 9 meters long
Boards of meddang wood (4 pieces below) and marsolo wood (4 pieces and above) With a board width of 20 cm, 2.5 cm thick and 4 meters long
Bone boat from betti wood with a size of 6 × 8 cm.

Boat size after completion: 14.7 meters long 2.4 meters wide

And regarding wooden boats in marinas in the Atlantic mid south, I still find some very prejudiced people. Guy just brought in his FG bathtub boat a month ago and as I met him he tells me, " I am walking down the dock and I see what a wooden boat?, I can't believe they let a wood boat in here. Most marinas wont allow them in their slips..."
Then he says he went and talked to the marina owner, saying "why did you do that." And she at least knows me well enough to tell him, "well he maintains his boat."
Those were his first words to me. He did after I told him how I had restored it, say it has nice lines.

I honestly wished I did not have to rely on a marina at all.
I know of about 3 marinas that do not want your business if you have a wooden boat of any kind.
2 wont haul out any wood boats, the rest will. One has many wood boats, York River Yacht Haven, but refuses to haul out any claiming they crack like eggs, then they get sued.

My feeling is the farther south you go, the more likely they don't want your wood boat at their marina, as I still see plenty of wooden boats up north.