Personal Submersibles Discussion Forum The Personal Submersibles forum uses email to discuss topics relating to the safe design, construction, and operation of manned and unmanned submersibles. Participation includes contributors world wide with a large range of experience. Our discussion list is open to the general public and we encourage you to join whether you simply dream of building/owning a PSUB or are already operating one. To JOIN this mailing list, enter your email address in the space below and then click the 'Subscribe' button. To LEAVE this mailing list, enter your email address in the space below and then click the 'Remove Me' button.