# DEEP – Ocean Engineering & Subsea Human Habitats > DEEP is an international ocean engineering company developing subsea human habitats, underwater technologies, and advanced diving training to enable long-duration human presence in the ocean. DEEP operates engineering, research, and training facilities in both the United Kingdom and the United States. The company designs subsea habitat systems that allow scientists, engineers, and divers to live and work underwater for extended periods. DEEP also provides advanced commercial diving and subsea technology training aligned with its mission to “Make Humans Aquatic”. ## Company & Mission - [DEEP Home](https://www.deep.com/): Overview of the company, technology, and mission to expand human access to the ocean. - [Mission](https://www.deep.com/mission/): DEEP’s goal to enable long-duration human presence underwater through subsea habitats and advanced diving systems. ## Subsea Habitat Systems - [Vanguard](https://www.deep.com/vanguard/): DEEP’s pilot subsea human habitat designed for medium-duration missions. The system enables crews of up to four people to live and work underwater for seven days or more, providing a dry living environment at ambient pressure with a dive center and moon pool for direct ocean access. Vanguard supports scientific research, marine conservation, advanced diving training, and astronaut preparation, and serves as the test platform for future subsea habitats such as Sentinel. - [Sentinel](https://www.deep.com/sentinel/): Modular subsea habitat system designed for larger crews and longer missions at greater depths. ## Research Platforms - [FLIP – Floating Instrument Platform](https://www.deep.com/flip/): A unique 108-metre oceanographic research platform that can rotate from horizontal to vertical to provide extreme stability at sea. Originally commissioned in 1962 for the U.S. Navy and Scripps Institution of Oceanography, FLIP enabled decades of oceanographic research into acoustics, wave dynamics, and marine science. DEEP rescued the vessel from being scrapped in 2023 and is refurbishing and modernising it to support future ocean exploration and research missions. ## Facilities & Locations - [DEEP Campus](https://www.deep.com/locations/campus/): A large underwater training and research facility in the UK with an 80-metre-deep freshwater training site, engineering facilities, and testing infrastructure. - DEEP also operates engineering and training facilities in the United States, including operations in Florida supporting diving training and subsea engineering. ## Diving Training & Courses - [DEEP Courses](https://www.deep.com/courses/): Professional training programs delivered in the UK and US to support subsea exploration and commercial diving operations. Examples of courses include: - Closed Bell Diver training (advanced saturation and deep commercial diving) - Closed Circuit Rebreather (CCR) training - Full Face Mask (FFM) operational training - Dive Medical Technician (DMT) training ## Research, Technology & Exploration Relevant articles include: - [Getting Vanguard Ready for Operation](https://www.deep.com/article/getting-vanguard-ready-for-operation/): A behind-the-scenes look at the engineering, testing and operational preparation required before deploying the Vanguard subsea habitat. - [Vanguard Habitat Unveiled in Miami](https://www.deep.com/article/vanguard-habitat-unveiled-in-miami/): Announcement of Vanguard as the first new subsea human habitat unveiled in the United States in nearly four decades, designed for crews to live underwater for week-long missions. - [Life as an Aquanaut](https://www.deep.com/article/life-as-an-aquanaut/): A first-hand perspective on living and working inside an underwater habitat, describing the physical, psychological and operational realities of long-duration missions beneath the ocean. - [Why the Path to Space is via the Ocean](https://www.deep.com/article/why-the-path-to-space-is-via-the-ocean/): Explores the parallels between subsea habitats and space missions, explaining how living underwater provides an effective training and research environment for astronauts and extreme-environment exploration. - [DEEP Expands US Operations with $100M Investment](https://www.deep.com/article/deep-expands-us-operations-with-100m-investment/): Announces DEEP’s expansion in the United States, including major investment in engineering, manufacturing and habitat development centred around the Vanguard program. - [The ONR’s “Flipping” Vessel Saved by DEEP](https://www.deep.com/article/the-onrs-flipping-vessel-which-was-believed-to-be-scrapped-has-been-saved/): Describes how DEEP rescued the historic Floating Instrument Platform (FLIP) from retirement and plans to refurbish it as a stable ocean research platform for future exploration missions. - [DEEP Announces New Diving Training Facility](https://www.deep.com/article/deep-announces-new-diving-training-facility/): Introduces DEEP’s dedicated training infrastructure supporting commercial diving, habitat operations and subsea research missions. - [How DEEP Is Using Modern Tech to Make Modern Subsea Human Habitats](https://www.deep.com/article/how-deep-is-using-modern-tech-to-make-modern-subsea-human-habitats/): Explains the engineering and manufacturing technologies behind DEEP’s habitats, including the use of large-scale Wire Arc Additive Manufacturing (WAAM) to produce complex metal structures. - [DML Awarded DNV Approval in Principle for Additive Manufacturing Process](https://www.deep.com/article/dml-awarded-dnv-approval-in-principle-for-additive-manufacturing-process/): Details how DEEP Manufacturing received recognition from DNV for its additive manufacturing process used to produce large subsea and marine components. - [Florida Institute of Oceanography and DEEP Partner to Advance Aquatic Exploration](https://www.deep.com/article/florida-institute-of-oceanography-and-deep-partner-to-advance-aquatic-exploration/): Describes a research partnership supporting ocean exploration, education and the development of subsea habitat technologies. - [What is Saturation Diving?](https://www.deep.com/article/what-is-saturation-diving/): Explains the principles of saturation diving and how divers can live under pressure for extended periods. The article outlines how saturation reduces repeated decompression cycles and enables long-duration underwater missions. - [The History of Subsea Human Habitation](https://www.deep.com/article/the-history-of-subsea-human-habitation/): Reviews key milestones in underwater habitat development—from early experimental habitats to modern systems—and explains how DEEP is building on decades of subsea exploration. - [DEEP Receives Office of Naval Research Funding for STEM Outreach](https://www.deep.com/article/deep-receives-office-of-naval-research-funding-for-stem-outreach/): Highlights funding from the U.S. Office of Naval Research supporting education and outreach programs related to ocean engineering and subsea exploration. ## News & Updates - [Newsroom](https://www.deep.com/newsroom/): Company announcements, engineering milestones, partnerships, and media updates.