What's the difference between transhipment and transshipment?

Transhipment

Definition:

Example Sentences:

(1) "We believe from the scientific reports presented to us to date that the EIS will demonstrate that our proposed barging and transhipping operation offers a far smaller impact than traditional port developments, due largely to the vast reduction in dredging requirements.
(2) They seek to deter and repatriate migrants with imprisonment and transhipment.

Definition:

(n.) The act of transshipping, or transferring, as goods, from one ship or conveyance to another.

Example Sentences:

(1) More than 80% of the cocaine entering the United States is now thought to be transshipped through Honduras.
(2) In central blood banks, these models can minimize shipment quantities, determine optimal transshipments and the most efficient routing.
(3) This result was confirmed by studies on the uptake of gamma-aminobutyrate (GABA) into an osmotically sensitive compartment in synaptosomes prepared from frozen human autopsy material transshipped from the brain tissue collection ("brain bank") at Harvard Medical School, MA, USA, to Sydney, Australia.
(4) AQIM had abolished taxes in the north and were using extortion, ransom payments and funds from drug transshipping to establish their rule, he said.