The qualifications to get a gulf offshore job depend on the position and your duties. For entry-level work, such as being a deckhand on a rig or platform, you typically only need a high school diploma or your GED certificate. If you have a more technical and advanced position, you may need several years of experience or a degree in engineering. Underwater mechanics need to have advanced training and knowledge of how to use a set of specialized tools, such as underwater welding equipment. All offshore jobs require you to have excellent safety skills. Most oil rig jobs also require you to have the license to work on international waters.