During the Age of Sail: How Did Merchant Navy Ranks Correspond to Naval Ranks?

During the Age of Sail, the Merchant Navy and the Royal Navy had distinct but corresponding ranks. These ranks reflected the hierarchy and responsibilities within each organization.

Captain

In both the Merchant Navy and the Royal Navy, the captain was the commanding officer of the vessel. He was responsible for the safety, navigation, and crew management of the ship.

First Mate

The first mate was the second-in-command on both merchant and naval vessels. He assisted the captain and took charge in his absence.

Second Mate

The second mate was the third-in-command on merchant ships and the first lieutenant on naval vessels. He assisted the first mate and managed the deck crew.

Third Mate

Found only on merchant ships, the third mate was the fourth-in-command and assisted the second mate.

Bo'sun

The bo'sun (boatswain) was responsible for the maintenance and operation of the ship's rigging and sails.

Seamen

The seamen were the ordinary sailors who performed various tasks on the ship, such as hauling ropes, reefing sails, and navigating.

Apprentices

Apprentices were young boys who were training to become seamen. They assisted the seamen and learned the skills of seafaring.

Rank Correlation

Generally, the ranks in the Merchant Navy corresponded to those in the Royal Navy as follows:

  • Captain = Captain
  • First Mate = First Lieutenant
  • Second Mate = Second Lieutenant
  • Third Mate = N/A
  • Bo'sun = Boatswain
  • Seamen = Sailors
  • Apprentices = N/A

Additional Notes

  • Merchant vessels often had a "purser" who managed the ship's finances and supplies, but this position was not present in the Royal Navy.
  • On naval ships, there were also specialized ranks such as "navigator" and "surgeon" who were not typically found on merchant vessels.
  • What was the highest rank in the Merchant Navy?
    • Captain
  • Who assisted the captain on merchant ships?
    • First mate
  • What rank was responsible for the rigging and sails?
    • Bo'sun
  • What was the equivalent of a third mate in the Royal Navy?
    • Not applicable
  • What was the training rank for aspiring seamen?
    • Apprentice
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