A statement by the international anti-piracy task force says the 24 crew members on the MV Guanabara took refuge in a protected part of the vessel after reporting they were under attack Saturday.
This is the key point. The ship had a citadel. This seems to be the favorite way now of avoiding capture. The military can then move in secure in the knowledge that there are no hostages.
BTW, its not a sudden change of plan, there have been many armed interventions , where this type of citadel exists, mnay shipping
companoes are modifying to fit them
Unfortunately doesnt work for yachts