Mud scow

a heavy scow, used in dredging; a mud boat.

See also: Mud

Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.
References in classic literature ?
And I'm not married, Virginia, and never have been; but I shall be if this miserable old mud scow ever reaches Singapore."
Solid rubber tires of a size capable of carrying 10 passengers, a lot more in an emergency and with all the grace of a mud scow. I ran it 11 years, and later gave it to my son, who in turn traded it for a piano.