but according to this article, there's not much room for more than two Ukrainians, since the passengers were elsewhere during the capture

PARIS (AP) - France's military is keeping close tabs on a French luxury yacht seized by pirates in the Gulf of Aden off Somalia's coast, and officials hope to avoid using force to free the 30 crew members, the prime minister said Saturday.

Attackers stormed the 88-meter Le Ponant on Friday as it returned without passengers from the Seychelles, in the Indian Ocean, toward the Mediterranean Sea, officials with French maritime transport company CMA-CGM said.

France's defense minister said the crew included 22 French citizens, including six women. Other members included Ukrainians, military spokesman Cmdr. Christophe Prazuck said. About 10 attackers continued to guide the boat south along Somalia's eastern coast, he said.