The person in command of any ship, carries the personal title of 'Captain (family name) '. Like any other man would carry the personal title of 'Mr.(family name)', (Mister).
When in command of a ship, he/she is the Master or Commanding Officer. Often known by the nickname , but not to his/her face as the 'Old Man'.
Their profession is 'Master Mariner'.
The is no such thing/person as a 'sea captain'. It is a silly nonsensical ignorance.
Smith
the captain of the sinking titanic was Edward John Smith
The Captain of Titanic was Edward John Smith.
Titanic was traveling in a westbound lane heading to the US from Europe but, on the orders of Captain Smith, she headed on a more southerly route to avoid ice.
The iceberg ruptured how many of the Titanics watertight compartments
titan
charles proctor
The Carpathia
Thomas Andrews
24 ounces
Carpathia
edward john smith