A submarine can be used as either a defensive or offensive weapon. Also note that it is often classified as a deterrent weapon.
Any weapon can be defensive or offensive from a rock to a hammer to a car, etc..
What did you have in mind? It could be as simple as putting a couple of stones into an athletic sock. Really, a weapon of any sort isn't wholly defensive - they have offensive applications, as well.
A unicorns horn is said to be able to detect poisons and heal wounds and illnesses. It can also be used as a weapon, defensive or offensive.
Offensive or defensive
The dome on a Roman shield is called a boss and it was used in an offensive action. A shield, although its prime purpose was defensive, was also used as an offensive weapon in a pushing movement.
Offensive and defensive tactics will depend upon what a person is trying to do. For example, in football defensive tactics will defend themselves and offensive tactics will be trying to make a goal.
offensive
This is a foul on the offensive player. The defensive player does not have to fall down in order to get a charge called
offensive
Northern Iowa is one. Bryce Paup-Defensive and Kurt Warner-Offensive. Michigan is the other: Charles Woodson - Defensive and Tom Brady - Offensive.
Defensive
ANWSER:DISAGREE