Not very flattering for the yard that built this hull.
Don't know much about welding, but from what I've heard, this is the result one gets when welders (ship hull building yard) is pressed hard on time to finish a hull.
If a welder welds hard ('molsveiser' as we say in norwegian) the hole length on each side of a spar, the iron plate of course will expand due to heat.
As the welder has finished his business around a set of spars and moved on, the iron plate has "nowhere to go" when it cools down, and it will be forever dented.
What the welders should've done was to put welding points on one side of a spar first, then cool down the plate before welding the length of the spar, then repeat on the other side.
As you understand, to weld in this "correct" way is very time consuming, and since it has no other results than aesthetics, the ship building yards all around is welding hulls together at highest possible speed....., the "wrong" way.
Any welders in here who could correct me...?
"IF GOD COULD MAKE ANGELS...., WHY IN HELL MAKE MAN?"