One doesn't need to dive. Knowledge of the pipeline's path and depth is enough. If you have a sonar it's even easier. Make a depth charge out of a barrel, set a

One doesn't need to dive. Knowledge of the pipeline's path and depth is enough. If you have a sonar it's even easier. Make a depth charge out of a barrel, set a timer and detonate it near the pipeline. Can be accomplished with a 27 ft fishing boat.