1. Apparatus for use by a trainee to make underwater electric welds comprising: an open water tank having a welding station and a workpiece bench; electrically powered reversible means exteriorly of said tank and electrically insulated from said workpiece bench for adjusting said workpiece bench to support a workpiece at a desired submerged height and including foot operated control means therefor; the sidewall of said tank having a pair of rubber gloves with the inlets thereof opening through and sealed to said sidewall; and an electric welding stinger within said tank connectible by an insulated power lead to a source of welding power.