Dam or reservoir targeted during 9/11

[Martin the Martian]

Thankfully, terrorists have little or no imagination. Nearly every attack in the UK has been in London or in another big city. You could get a lot more 'terror' by going to a smaller town further away from the large cities, but still one that has enough people to kill to make a statement. I can think of plenty large towns where a 7/7-type op could provide a big death toll and shock a lot of people from the 'it won't happen here' mindset.

 

[RamscoopRaider]

!!!!!!!!!!!Hypothetical scenario!!!!!!!!!!!!

Ten-ton cargo ship contains the following:

• 2400 tons of Picric Acid
• 2600 tons of Nitroglycerin
• 2500 tons of Ammonium nitrate
• 1450 tons of Oil
• 500 tons of TNT
• 25 tons of Benzol
• 25 tons of Guncotton

Contents of ship disguised as shipping "clothing". Sails into New York Harbour and docks at Manhatten. She explodes yielding a 7-10 kiloton explosion flattening Manhatten. Buildings collapse days after.

Aside from the cost of your list (between chemicals and the used cargo ship probably talking in excess of $40 million, which is more than Al-Qaeda's annual income of $30 million) New York Harbor would require pilots, maybe tugs. It would also not dock at Manhattan, but at closest in South Brooklyn, more realistically in New Jersey or Staten Island (South Brooklyn terminal is auto imports and scrap metal mostly), Manhattan gets broken windows at worst