阿拉斯加峡湾，内海通道与冰川湾

The Seymour Narrows is a 3-mile/5 km stretch of the Discovery Channel north of Vancouver Island, British Columbia that is notorious for the strength of the tidal currents flowing through it. The average width of the narrows is just 750 meters. During extreme tides, the current through the narrows is subject to severe Venturi effect, resulting in an increased velocity that can reach 15 knots. For much of its modern history, there was an additional hazard in the narrows called Ripple Rock, a shallow obstruction that claimed no fewer than 119 ships and 114 lives. In 1958, after months of tunneling and preparation, Ripple Rock was blown up in the largest commercial, non-nuclear explosion ever recorded in North America. Still, the navigation of Seymour Narrows is dependent on tidal and other conditions, and requires skill and technical accomplishment.

The Queen Charlotte Sound lies between the Queen Charlotte Strait, which winds between Vancouver Island and the British Columbia mainland in the south, and Hecate Strait, which is northward, adjacent to the Haida Gwaii Islands off the Pacific coast of British Columbia. It is a broad reach in the long shipping route called the Inside Passage threading the myriad islands stretching from Washington’s Puget Sound to Alaska.

In the passage between Sumner Strait and Clarence Strait in Southeast Alaska’s Alexander Archipelago, midway between Price of Wales Island on the west and Zarembo Island on the east, is a small cluster of islands with a picturesque passageway between them called Snow Pass. It makes a scenic up-close route for your Seabourn ship during the transit.

Decision Passage is the western end of the Sumner Strait, which runs through the Alexander Archipelago into the Pacific Ocean in Southeastern Alaska, bounded on the north by Kuiu Island and Cape Decision, the location of a 1932 lighthouse. This is the route your ship takes when coming from or going to the colorful historic community of Sitka on the west coast of Baranof Island, which was originally the Russian fortress town of New Archangel.

Lynn Canal is a 90-mile long inlet into Alaska’s coast running from the Chilkat River in the north to the Chatham Strait and Stephens Passage in the south. Because it connects the towns of Skagway and Haines to Juneau and the rest of the Inside Passage, it is an important shipping lane for ferries, cargo and cruise ships, and was a crucial passageway to the Klondike gold fields during the Gold Rush. It was discovered by Joseph Whidbey in 1794 and named by George Vancouver after his birthplace, King’s Lynn in Norfolk, England. More than 2,000 feet in depth, it is one of the deepest and longest fjords in the world, and the deepest in North America outside Greenland.

Stikine Strait is a picturesque channel in the Alexander Archipelago of Alaska between Zarembo Island and Woronkofski and Etolin Islands near the mouth of the Stikine River south of Wrangell. It first appears on an 1848 Russian chart as Stakhin Strait and has been spelled variously on many charts since that time.

Grenville Channel is a long, well-protected channel along the northern British Columbia coast between the large Pitt Island and the mainland. It is an important shipping lane, and you are likely to see ships of many different types and sizes as you pass through. The shores are mountainous on both sides, with two notable peaks about halfway through, Mt. Batchellor on the east side and Mt. Saunders on Pitt Island to the west. There are a number of Indian Reserves and Marine Parks in the mountains and narrow waterways off the channel.

Whale Channel is a picturesque waterway separating Gil Island from Princess Royal Island in British Columbia’s Inside Passage. Surrounded by snow-capped mountain ranges and teeming with marine life, It is a diversion from the main shipping lane, located roughly halfway between Prince Rupert and the First Nations village of Klemtu. VIEW CRUISES Skip Footer Content About Us

The Princess Royal Channel separates the largest island along British Columbia’s coast from the mainland. It is located roughly halfway between Bella Bella in the south and Prince Rupert in the north, in one of the province’s most remote areas. Princess Royal island was named in 1788 by Captain Charles Duncan, in honor of his ship, the Princess Royal. The island is uninhabited, although there are two small villages in the channel, the First Nations community of Klemtu on Swindle Island and Hartley Bay on the mainland. Wildlife, by contrast, is plentiful, including Kermode, black and grizzly bears, deer, wolves and foxes. Golden and bald eagles nest in the region, as well as the endangered marbled murrelet. In the waters, there are abundant salmon, elephant seals, whales, orcas and dolphins.

Johnstone Strait is a well-protected shipping route passing 68 miles/110 km along the northeast shore of Vancouver Island between the island and the mainland of British Columbia. The strait is between 1 ½ miles and 3 miles wide, and leads from the broad Georgia Strait through a narrow channel called Discovery Passage. The strait was named by Vancouver in 1792 for James Johnstone, the master of one of his tenders during the survey expedition that revealed Vancouver Island to be an island. There are no cities or towns on the strait. The Johnstone Strait is the summer range of a large pod of seasonally resident orcas which are frequently seen in the area. VIEW CRUISES Skip Footer Content About Us Our Company News Careers Contact Us Video Gallery Accessibility Seabourn Club Seabourn Referral Program Travel Resources

The Seymour Narrows is a 3-mile/5 km stretch of the Discovery Channel north of Vancouver Island, British Columbia that is notorious for the strength of the tidal currents flowing through it. The average width of the narrows is just 750 meters. During extreme tides, the current through the narrows is subject to severe Venturi effect, resulting in an increased velocity that can reach 15 knots. For much of its modern history, there was an additional hazard in the narrows called Ripple Rock, a shallow obstruction that claimed no fewer than 119 ships and 114 lives. In 1958, after months of tunneling and preparation, Ripple Rock was blown up in the largest commercial, non-nuclear explosion ever recorded in North America. Still, the navigation of Seymour Narrows is dependent on tidal and other conditions, and requires skill and technical accomplishment.