The Philadelphia Experiment (1984)

A fictional story built around the real life belief that during World War II the US Navy carried out a secret experiment in which they made a very large ship invisible to enemy devices. The unwise tinkering with natural forces leaves two sailors (Michael Paré and Bobby Di Cicco) in sci-fi movie peril.
There's a lot of electrical activity in the film but not very much of it between the main characters, which is where it really needed to be. I watched it to the end because I always enjoy watching Nancy Allen. Plus, the peculiar special effects are a lot of cheesy fun - which translates to a load of cheap and unconvincing bollox if your tastes happen to be the opposite of mine.

2½ wrinkles out of 5