1. Project Power and Deterrence: Dreadnoughts were designed to demonstrate a nation's naval strength and deter potential enemies from challenging their dominance at sea. Their sheer size and firepower projected an aura of overwhelming power.
2. Engage in Naval Battles: While their primary role was deterrence, dreadnoughts were designed for battle. Their heavy guns and armor allowed them to engage in long-range artillery duels with other battleships, hoping to cripple or destroy their opponent.
3. Provide Fire Support: Dreadnoughts could also provide fire support for amphibious operations or coastal bombardment, though their massive size and limited speed made them less suitable for these roles compared to smaller cruisers.
4. Protect Trade Routes and Colonies: Dreadnoughts were instrumental in safeguarding vital sea lanes and protecting a nation's colonial possessions. They could deter piracy and enemy naval raids, ensuring safe passage for merchant ships.
5. Contribute to Diplomacy: Dreadnoughts became a symbol of national power and were used as a bargaining chip in international diplomacy. Their presence in a certain region could influence the outcome of negotiations and shape the balance of power.
In summary, dreadnoughts were the ultimate expression of naval power in the early 20th century. Their primary purpose was to deter aggression, engage in battles with other battleships, and project a nation's strength on the world stage.