US 12,227,265 B2
Surface/submersible craft
Graham Allen, Edinburgh (GB)
Assigned to Subsea Craft Limited, Portsmouth Hampshire (GB)
Appl. No. 17/429,332
Filed by Subsea Craft Limited, Havant (GB)
PCT Filed Feb. 7, 2020, PCT No. PCT/IB2020/050986
§ 371(c)(1), (2) Date Aug. 7, 2021,
PCT Pub. No. WO2020/161677, PCT Pub. Date Aug. 13, 2020.
Claims priority of application No. 1901786 (GB), filed on Feb. 8, 2019.
Prior Publication US 2022/0106016 A1, Apr. 7, 2022
Int. Cl. B63B 1/12 (2006.01); B63G 8/00 (2006.01); B63G 8/08 (2006.01)
CPC B63B 1/12 (2013.01) [B63G 8/001 (2013.01); B63G 8/08 (2013.01)] 21 Claims
OG exemplary drawing
 
21. A surface/submersible water-craft, comprising:
a hull,
means for submerged propulsion provided in or on the hull,
means for surface propulsion provided in or on the hull,
a floodable-on-submerging engine room containing an engine for surface propulsion, the floodable-on-submerging engine room provided in the hull, an engine for surface propulsion contained in a floodable space within the floodable-on-submerging engine room, and
sea cocks and air ports are provided for the floodable-on-submerging engine room, whereby in diving the floodable-on-submerging engine room can be filled with water via its sea cocks from below with upwards escape of air through its air ports and in surfacing the floodable-on-submerging engine room can be drained of water via its sea cocks from below with ingress of air through its air ports, wherein the sea cocks are closable when not in use.