Great brief, could you please answer these followup questions to guide my design
1. How do you want the ships arranged in the image? Star/circular pattern (like in your reference images) or Side by side / fleet formation (lined up next to each other) or Scattered naturally in various positions and angles on open water, like a busy harbor
2. What perspective/camera angle do you prefer? Bird's eye (top-down) or Aerial at an angle

Check out my initial entry for your hero image design. Design Id #36879082.