Pressure hull for human occupancy for manned submersibles

The acrylic pressure hull with a circular cross-section and non-uniform profile addresses occupancy and visibility issues in submersibles by enhancing ergonomics and reducing displacement, enabling multiple occupants with clear views and compact design.

EP4772430A2Pending Publication Date: 2026-07-08DARK OCEAN LTD

Patent Information

Authority / Receiving Office
EP · EP
Patent Type
Applications
Current Assignee / Owner
DARK OCEAN LTD
Filing Date
2021-05-27
Publication Date
2026-07-08

AI Technical Summary

Technical Problem

Existing manned submersibles with spherical or combined spherical/cylindrical pressure hulls face limitations in occupancy, visibility, and ergonomics, particularly for shallow and medium-depth dives, due to size constraints, manufacturing complexity, and the need for metal bands, which restrict viewing angles and comfort.

Method used

A pressure hull with a circular or near-circular cross-section and an elongated, non-uniform profile along the major axis, made from acrylic, allowing for a spheroidal shape with localized deviations to enhance viewing and ergonomics, accommodating multiple occupants with clear lines of sight without increasing height or displacement.

Benefits of technology

The solution enables comfortable accommodation of several occupants with unobstructed views, reducing manufacturing complexity and weight, while maintaining a compact footprint and low displacement, suitable for various uses including yacht storage and diverse seating arrangements.

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Abstract

The invention provides a pressure hull (1) for human occupancy for manned submersible vessels, wherein the hull (1) is formed from acrylic, characterised in that the hull has a circular, or near-circular, cross-section across a major axis (2) and has an elongated, non-uniform profile along the major axis (2). The invention further provides a manned submersible including a pressure hull (1).
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