Very simply, not in any numerical order, these areas/harbours:
1. Area of Puget Sound, bounded by harbours of Vancouver, BC - Victoria, BC - Seattle/Tacoma, USA.
2. The Aegean Sea area, bounded by harbours of Piraeus, Greece - Crete - Izmir, Turkey.
3. The Ariatic Sea area, bounded by harbours of Trieste, Italy - Split or Dubrovnik in the Balkans - Taranto, Italy.
4. The south coast of Japan, from Tokyo/Yokohama to Nagoya.
5. The Strait of Malacca, from Singapore to Kelang, Malaysia
6. The Seto Aikai Sea, from Beppu on Kyushu Island to Osaka, but including all of Shikoku Island so you have a choice of an inside or an outside route.
7. Hong Kong Harbour, with islands.
8. Sydney or Melbourne Harbours.
9. both New Zealand Islands.
10. Casablanca, Morocco to Algiers, Algeria - including the Rock of Gibraltar and Cadiz, Spain.
11. Any of the islands in the Caribbean Sea.
12. Perhaps Rio de Janiero. Some South American ports.
That's all I want. Later, I may want more....
Update: CANADA! Don't forget our friends Bob and Doug!