Eight of the largest boilers are set in watertight compartments.
Before them was the watertight door, in which was set a large pane of quarsteel.
They are heavily built, with good beam and watertight compartments.
We might as well make our roof as watertight as we can before dark.
"The whole of the underbody of the outer envelope is watertight," he remarked.
The Frenchman ...