I can't tell if the joints have been sealed or caulked on the hull, or not.
But I am sure when first put in water, the hull will seep a bit until all the wood swells to normal size.
I was following a PT Boat rebuild, and when they rebuilt the forward half hull, with cross timbers, the original blueprints showed about 1/8" to 1/4" gap between boards, and they wondered why.
Finally one older sailor and wood worker told them about making sure you leave room for swelling of new dry wood which had never been submerged in water.
They used a pump to keep up with leaks for about 6-8 hours till wood swelled and all leaks stopped as well.