As an experienced diver, you have come to appreciate all of the hard work and effort you have put into your training. With some of the SDI advanced specialty certifications, your pervious certifications and dives will work to your advantage. If you have experience with deep and shipwreck diving, you are eligible to take the SDI Wreck Limited Penetration course. If you have and SDI Advanced Certification as well as 100 dives, you are able to take the SDI Solo Diver certification. By enrolling in any of the advanced specialty courses, you will have the access and training required to go places and do things that not all divers can.