For that is what I would do, have one or two of my crew be equipped with "Dead men Switch" i.e. they MUST keep a grip on the switch or it goes off automatically sinking the ship. Thus killing the Pirate sets off the explosives sinking the ship and is cargo.
Remember the shipper wants his ship back with the cargo if possible. The Crew wants to live. The pirates want what they can sell or use (And that does NOT include the Tanks) thus the big fear is the Pirates will sink the ship. What I expect to happen, is the Pirates take off any light arms (Machine guns, Rifles, RPGs, Ammunition etc) and leave the ship, the tanks and the crew. Any assault on the ship will have to show that the Assault will NOT only return the Ship, the tanks and the Crew but something more (i.e. the small arms etc). Right now that is NOT possible, so nothing is going to happen except maybe the Pirates unloading the light weapon and fuel via boats. Once that is done I expect this to end with the Pirates abandoning the Ship, leaving the ship, tanks and crew. I do not see the Pirates holding out for money, but they may do so by setting a charge in the haul i.e. unless you pay us, we will blow the ship, and its crew and the tanks. Even if the ship is taken by force, a lot of the small arms, ammunition and fuel would have been unloaded. The US and Russian ships technically can not take this ship without Ukrainian permission (it is a Ukrainian ship) and the Ukraine may prefer to pay so the crew, ships and tanks are returned (The tanks to Kenya, the crew and ship to the Ukraine).
Side note why does Kenya want T-72 tanks? Ethiopia is tied up in Somalia, but part of "Greater Somalia" includes parts of Northern Kenya. Is Kenya worried about expansion of the Somalia problem to its northern region? When Africa's borders were drawn up in the Treaty of Berlin in 1885 (See
http://en.wikipedia.org/wiki/Berlin_Conference for more details) The best port of Somalia was given to the French, the British obtain the northern 1/4 while Italy was given the rest. When the Ethiopians defeated the Italians in 1896 it was agreed that the area between the Ethiopia highlands and what became Italian Somalia would be part of Ethiopia not Somalia even through most of the people in that section were Somalians NOT Ethiopians.
http://en.wikipedia.org/wiki/DjiboutiMore on Ethiopia:
http://en.wikipedia.org/wiki/EthiopiaThe Ethiopia region of Somali (The area I was talking about above):
http://en.wikipedia.org/wiki/Somali_RegionThus Somalia has always had a desire to connect these five parts into one (British Somalia, Italian Somalia, Kenya Somalia and Ethiopia Somalia as while as the Port of Djibouti (For more on Djibouti see
http://en.wikipedia.org/wiki/Djibouti ). Djibouti's population is 60% Somalia and 35% Afar (who are also a minority in Northern Ethiopia, being mostly herders their tribe is often more important then whatever country they are in, as are most herding societies i.e. the Highland Scots before the British removed them from the Highlands starting in the late 1600s). The Afar extend into southern Eritrea (For more see
http://en.wikipedia.org/wiki/Eritrea ).
Thus the question why does Kenya need tanks? Are they concern about Somalia? Is it something internal? Kenya has no one single ruling nationality (Unlike England, France and Germany) For details see:
http://en.wikipedia.org/wiki/KenyaThey has been internal problems in Kenya, NOT in the Eastern Somalia section but with the Western part of the country:
http://tinyurl.com/kenya-2007-2008http://en.wikipedia.org/wiki/2008_in_Kenyahttp://en.wikipedia.org/wiki/2007_in_KenyaThis tank shipment is for something, maybe Somalia related may be internal, only time will tell and what happen to this shipment may be independent of those internal forces or part of those internal forces only time will tell (i.e. did someone in Kenya have this ship Pirated? the opposite question is also possible, the Pirating of this Ship may have some affect in Kenya do to bring the shipment of tanks to the People of Kenya's attention, if a I knew which is the case I would give a better answer but I do not and those that do are not talking).