@zero-334: It seems to me that shields protect the ships from debris, objects, and energy weapons like you said. Several Star Trek novels will have a ship drop shields before a friendly shuttle can come in contact and dock on it. And I think nukes as a weapon have because somewhat obselete by that time in Star Trek. I mean, in space, a nuclear blast's yield will be less powerful than it is within the atmosphere. It has to do with how air reacts with the explosion. Even so. In games like Star Fleet Battles and Federation commander, ships like the Enterprise can carry missiles (possibly nuclear tipped or equlpied with a material even more powerful) that can be used against enemy ships. Additionally these ships have counter measures for those said missiles as well. Though the power of the missiles or 'drones' as they are called in the game, are significantly less than the much faster, more powerful, photon torpedo.