Reembarkation
The Century Dictionary and Cyclopedia
noun.
A putting on board or a going on board again.
the GNU version of the Collaborative International Dictionary of English
noun.
A putting, or going, on board a vessel again.
Wiktionary, Creative Commons Attribution/Share-Alike License
noun.
embarkation
again or anew
Word Usage
"The two companies would meet some ten hours later at the southern tip for reembarkation."
suggests
embarkation