Pineapple and Banana separate pack from single-boat attacks

Pineapple was intended for likely pack attacks: escorts searched with sonar, radar, star shells, and shallow-set depth charges while trying to force a second boat to dive. Star shells were directed away from the convoy and toward the expected threat, creating both a search zone and a darker background that complicated another U-boat's view. Banana addressed a single-boat attack by assigning rear and flank sweeps while one escort took the observant role near the damaged ship. That observant ship could help survivors while checking whether the attacker remained nearby, and the other escorts covered likely escape routes. The two procedures show how simple code words compressed a detailed, conditional tactical plan into an action commanders could order quickly.