SDI-TDI-ERDI

Overview

技术潜水国际（TDI）声称是世界上最大的技术认证机构。TDI被认为是新的潜水技术和计划的创新者，并且是最早提供混合气水潜水和折扣培训的机构之一。

Bret Gilliam, David Sipperly and Mitch Skaggs founded TDI after splitting from International Association of Nitrox and Technical Divers (IANTD) in 1993. Their aim was to provide training materials and education for specialized diving situations. Although there were a few technical diving organizations at the time TDI joined the market, TDI had a training mission to shed new light on traditional diving limits, and offered courses that met the World Recreational Scuba Training Council standards.

TDI提供诸如Nitrox和Rebreather之类的开巡回赛课程，还为洞穴和残骸等高架环境以及混合气体提供培训。他们是为技术潜水教练制定全面保险计划的首批潜水机构之一。

1999年，TDI扩展并成立了一个名为Scuba Diving International（SDI）的姊妹组织，重点关注Scuba1zplay Diving的运动方面。SDI的课程是为了将潜水员从初学者级别带到教练级别，并使潜水员处于从娱乐1zplay活动到技术潜水的位置。

There are a number of features that make this organization distinguished and unique. SDI teaches recreational diving from the technical diving perspective. It is also the only diver-training agency that requires students to have access to a modern dive computer on all dives during training from the very start. Last but not least, SDI offers a special training course for solo diving (Solo Diver Certification), while most recreational diver training organizations mandate diving with a buddy at all times.

SDI致力于成为潜水教育的创新者。1zplay他们的课程材料是最先进的，更不用说，包括大量插图的摄影和图形。

In 2000, another sister organization was launched called Emergency Response Diving International (ERDI) to teach public safety diving to public safety organizations. ERDI is the Public Safety diving (PSD) agency that trains police, fire, and other public safety organizations in search and rescue techniques in just about every submerged environment known. ERDI is the only public safety diving training agency that has their own insurance that endorses its own standards.

ERDI计划由一些最大的成功，著名部门用于培训。