1. The Iowa class battleship has a foot thick armor on the hull. WW2 ships used armor that was sometimes even thicker. Washington class had 16 inch armor for instance.
ARMOR BELT != HULL.
REGARDLESS YOU CLAIMED SUCH HULLS ARE COMMON, THEY DON'T EXIST, MUCH LESS COMMONLY. STOP TRYING TO BACKTRACK. HOW MUCH DID YOU PAY FOR THAT UID?
2. cargo ships conventionally have to have accommodations for people. The entire ship, other than the engine room(s), could be one big vault, with the entire top being a doorway to allow access to the interior, much like the old space shuttle. It would be no more difficult to load or unload than existing cargo ships.
15 PEOPLE AND THEIR LIFE SUPPORT SYSTEMS ARE AN INSIGNIFICANT CONSIDERATION IN AN INTERMODAL SHIP DESIGN.
DOORS WHICH OPEN LIKE THE SPACE SHUTTLE, YET ARE HUNDREDS OF FEET LONG AND 12" THICK WOULD BE AN ENGINEERING MARVEL, WOULD COST MORE THAN THE LOSS OF DOZENS OF PIRATE RAIDS, COST CARGO CAPACITY, AND PROTECT AGAINST A THREAT WHICH DOES NOT EXIST.
3. Presumably, there are reasons why they want to run autonomous ships in the first place. If it isn't profitable, obviously they won't do it. I was simply suggesting that looking at things from a perspective of ships that are always designed for accommodating at least a few human passengers may create limitations on what designs are practical, and if we drop those assumptions, other possibilities may surface.
HUMANS ON THE SHIP DOES NOT PREVENT ARMOR TODAY. FULL STOP. ARMOR DOES NOT EXIST BECAUSE IT PROTECTS AGAINST A NON THREAT.
4. Actually, I thought generally pirates made their money by robbing the people on the ship... but then I wasn't the one who initially suggested that these ships would be vulnerable to piracy. I was only proposing that it may be possible to mitigate such vulnerability, assuming it it were to exist in the first place, by incorporating design changes into such a vessel that would not be practical if the vessel needed to carry a human crew.
THEY TAKE HOSTAGES FOR RANSOM. SELLING 100,000 PAIRS OF NIKE SHOES IS NOT PRACTICAL WHEN YOU'RE RAIDING WITH SPEEDBOATS, NOR IS IT PROFITABLE EVEN IF YOU HAD CARGO ROOM. CHINA SHIPS TOILET PAPER TO THE US. TOILET PAPER.