A bulkhead is a structure that is used to provide stability at certain pressures of weight or is a referance to ships walls.
That is radar, which is short for radio direction and ranging.
In mathematics, Thales used geometry to solve problems such as calculating the height of pyramids and the distance of ships from the shore. He is credited with the first use of deductive reasoning applied to geometry, by deriving four corollaries to Thales' Theorem. As a result, he has been hailed as the first true mathematician and is the first known individual to whom a mathematical discovery has been attributed.[5]
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USPS
Alberto Jimenez has written: 'A method to predict the statical stability of merchant ships in preliminary design' -- subject(s): Naval architecture
stability
R. F. Scheltema de Heere has written: 'Buoyancy and stability of ships' -- subject(s): Hydrodynamics, Ships, Stability of ships
H. J. Pursey has written: 'Merchant ship stability' -- subject- s -: Merchant ships, Stability of ships
John Anthony Hind has written: 'Automation in merchant ships' -- subject(s): Automation, Merchant ships, Ships 'Stability and trim of fishing vessels for skippers & second hands' -- subject(s): Fishing boats, Stability of ships
Ships
radar
clinker building
Method of propulsion was The Wind only
.... Face palm ....
They positioned them in the middle of a convoy presuming that the ships on the out edges would be torpedoed first.
The most common symbol representing stability is the triangle, particularly the equilateral triangle with its equal sides and balanced structure. The anchor also symbolizes stability, as it is used to secure ships in place, serving as a metaphor for being grounded and secure.