Bushnell also introduced practical solutions that became standard in submarine design. The sealed, watertight hull, the ballast system used for diving, and the hand-cranked propellers to move both ...

Retired Capt. James Bryant, who was the skipper of a Thresher-class submarine, sued for release of the documents. According to findings in the documents, the ballast system used to surface in an ...

Los Angeles-based Aeros Corporation is developing an electric variable buoyancy cargo airship (eVBA) called the “.” ...

It also had a streamlined hull for easier underwater travel, a conning tower, separate main and auxiliary ballast systems, and a tube for launching torpedoes. Submarines would get bigger ...

Flat roofs require many considerations, from practicality and appearance to material selection, performance, cost and ...

Shipbuilding has come a long way since the days of sail and wooden hulls. These ships carry out some wild missions thanks to ...

Diversification across regions and megatrends — including clean energy transition, wealth transfer and AI — remains critical ...

Additionally, the Committee took the following actions: Carbon intensity (CII) reduction factors for 2027-2030 – amendments adopted Access to the IMO Data Collection System for ship fuel ...

Its economic linkages and overall heft create ballast when the global economic system has been disrupted as it has been, and its institutional steady-hand acts as an enabling focal point for ...

It has advanced heating systems to ... equipped to operate in sub-zero weather. Heating techniques are important for the passengers as well as the train’s operation. Ballast-less tracks, the ...