She transformed my poor wife into a Golden Pig, and I must have revenge for that, whatever else we do." "Look out!" suddenly exclaimed the officers, pointing into the lake; "something's going to happen." From the submerged dome a door opened and something black shot swiftly out into the water.

The door instantly closed behind it and the dark object cleaved its way through the water, without rising to the surface, directly toward the place where the Flatheads were standing.
"What is that ?" Dorothy asked the Lady Aurex.
"That is one of the Queen's submarines," was the reply.

"It is all enclosed, and can move under water.

Coo-ee-oh has several of these boats which are kept in little rooms in the basement under our village.
When the island is submerged, the Queen uses these boats to reach the shore, and I believe she now intends to fight the Flatheads with them." The Su-dic and his people knew nothing of Coo-ee-oh's submarines, so they watched with surprise as the under-water boat approached them.
When it was quite near the shore it rose to the surface and the top parted and fell back, disclosing a boat full of armed Skeezers.

At the head was the Queen, standing up in the bow and holding in one hand a coil of magic rope that gleamed like silver.
The boat halted and Coo-ee-oh drew back her arm to throw the silver rope toward the Su-dic, who was now but a few feet from her.