Insubmergible

This was not one of those splendid boats which now line the shores of the United Kingdom; nevertheless, it was a noble craft -- one of the good, stable, insubmergible and self-emptying kind which were known as the Greathead lifeboats, and which for many years did good service on our coasts. ❋ Unknown (1859)

That she is insubmergible has been proved by what has already been written, and our space forbids giving further illustration, but a word about the cause of this quality is necessary. ❋ Unknown (1859)

The splendid craft which he commanded was one of the self-righting, insubmergible boats of the Institution. ❋ Unknown (1859)

That the lifeboat is insubmergible has been proved to some extent by the foregoing incident. ❋ R. [Illustrator] Richardson (1859)

It is _almost_ indestructible; it is insubmergible; it is self-righting; it is self-emptying. ❋ R. [Illustrator] Richardson (1859)

In a few seconds the oars were shipped, the anchor was got in, and the overloaded but insubmergible craft disappeared into the darkness out of which it had come. ❋ Unknown (1859)