enough to sink a ship

enough (something) to sink a (battle)ship

Referring to a very large quantity of something. Over the years, we've accumulated enough Christmas decorations to sink a ship. Where are we going to put them all?
See also: enough, sink, to
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.

enough to sink a ship

Also, enough to sink a battleship. A more than sufficient amount, as in They brought enough food to sink a ship. [Colloquial; mid-1900s]
See also: enough, ship, sink, to
The American Heritage® Dictionary of Idioms by Christine Ammer. Copyright © 2003, 1997 by The Christine Ammer 1992 Trust. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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References in classic literature ?
It was a piece of an ice-floe melted down to a fragment, but still big enough to sink a ship, and floating lower than any raft, right in our way, as if ambushed among the waves with murderous intent.