[PSUBS-MAILIST] Newbie

["Stuart" <4Hemms@flash.net>]

I am a Newbie to this sub stuff so bear with me. My friends and I were thinking of building a sub to go 20ft or so. We thought of making it out of one of those galvanized drainage pipes 4ft tall and 10ft long. If someone could tell me if this would work I would appreciate it and how I could seal stuff and ideas on how to sink it. If I am going to kill myself I want to know.