Lemaire Channel
Sailing the Lemaire Channel: its size, how ice can close it, what you see from deck, the landing sites at its southern end and which cruises plan to go through.
What is the Lemaire Channel, and will your ship get through it?
The Lemaire Channel is a passage about 7 miles (11 km) long between Booth Island and the west coast of the Antarctic Peninsula, only about 1,970 ft (600 m) wide at its narrowest, with peaks rising some 3,280 ft (1,000 m). Ships sail it for the scenery, but icebergs can block it completely, so operators promise it only if the ice allows.
Facts checked October 15, 2026 against 22 sources.
Lemaire Channel at a glance
- July: no trips
- August: no trips
- September: no trips
- October: no trips
- November: in season
- December: best
- January: best
- February: in season
- March: in season
- April: no trips
- May: no trips
- June: no trips
Best Season
- Type
- Sea or passage
- Location
- 65°05′S, 63°59′W
- Part of
- Antarctic Peninsula
- Season
- Ships attempt it through the cruise season; icebergs from calving glaciers can block it at any time, and from mid-December to mid-January there is no full darkness at nearby Port Lockroy.
- Best months
- December to January
- Getting there
- By ship only, on Peninsula voyages heading south toward Petermann Island and the Antarctic Circle; the channel runs from Splitwind Island and False Cape Renard in the northeast to Roullin Point and Cape Cloos in the southwest.
- Wildlife
- Humpback, minke and killer whales often appear in the channel; Adélie and gentoo penguins, blue-eyed shags and leopard seals at Petermann and Pleneau islands just beyond its southern end.
- Landings
- No landings in the channel itself, which ships sail through; nearby Petermann Island, Pleneau Island and Port Charcot each have Antarctic Treaty visitor guidelines, with 100 visitors ashore at most.
The Lemaire Channel is a narrow strait on the west coast of the Antarctic Peninsula, separating Booth Island from the mainland's Graham Coast.1 It is a passage, not a landing: ships sail through it for the cliffs and ice on either side, on the way south to the penguin colonies of Petermann and Pleneau islands or toward the Antarctic Circle.23 Operators sell it hard. Scenic says it is often called "Kodak Alley", Poseidon calls it "Kodak Gap", and HX says it is often hailed as the world's most picturesque channel.456
How long and wide is the Lemaire Channel?
About 7 miles (11 km) long and as little as 1,970 ft (600 m) wide, between peaks that rise to around 3,280 ft (1,000 m). Oceanwide gives those figures and a depth of about 490 ft (150 m).7 Other sources give wider figures: the US gazetteer says it averages about a mile across, and HX gives 1 mile (1.6 km).89 The channel runs northeast to southwest, from Splitwind Island and False Cape Renard to Roullin Point and Cape Cloos.1
Will your ship get through the Lemaire Channel?
Not always. Glaciers along the channel calve icebergs into it and sometimes block it completely, Oceanwide says, and Quark warns it can become impassable when ice fills the passage.710 No operator we checked publishes how often its ships make it through, and their itineraries hedge to match, as the table of voyages at the end of this page shows.
Getting through does not mean open water. When Silversea named Silver Endeavour in the channel in November 2022, the ship slid between icebergs and steep cliffs and cut through first-year ice about 3 ft (1 m) thick.12 And a blocked channel does not always end the trip south: HX's Iconic Antarctica plans to reach the Penola Strait, south of the Lemaire, through the French Channel, and uses the Lemaire only if ice and sea conditions allow.6
What will you see in the Lemaire Channel?
Steep cliffs and rugged, snow-covered peaks close on both sides, glaciers that calve into the water, and drifting ice.712 Killer whales, humpbacks and minke whales often appear, according to Oceanwide.7 Operators picture it from the open deck: Quark's photos show passengers at the bow as the ship cruises through, Poseidon invites guests onto the open deck while Sea Spirit threads the narrows, and Scenic tells guests to set an alarm if the ship goes through.10134
Light is rarely a problem. At nearby Port Lockroy the sun is up for almost 22 hours at the December solstice, and from mid-December to mid-January it never gets darker than civil twilight, so a late-evening or very early transit still has light.14 See our Antarctica weather by month guide for conditions through the season.
Where do ships stop after the Lemaire Channel?
At a cluster of sites just beyond its southern end, each governed by separate Antarctic Treaty limits. Landing figures are IAATO's count of ship and yacht landings in 2025-26.1516
| Site | What is there | Limits | Landings, 2025-26 |
|---|---|---|---|
| Petermann Island | The southernmost gentoo colony, per Quark, with Adélies, shags and skuas10 | 100 ashore; 3 ships a day, no more than 2 over 200 passengers | 118 |
| Port Charcot, Booth Island | A cairn left by the French Antarctic Expedition of 1903 to 190517 | 100 ashore; 2 ships a day, no more than 1 over 200 | 84 |
| Yalour Islands | About 8,000 pairs of Adélies, per Quark10 | 60 ashore; 2 ships a day, no more than 1 over 200 | 53 |
| Pleneau Island | Adélie penguins and blue-eyed shags; leopard seals2 | 100 ashore; 3 ships a day | 50 |
| Wordie House (British Base F), Winter Island | A historic hut, being surveyed by UKAHT in 2026-2718 | 36 ashore and 12 inside; 2 ships a day; the key is held at Ukraine's Vernadsky station | 39 |
Ship size matters here. Port Charcot and the Yalour Islands each take only one ship of more than 200 passengers a day, so if yours is that big, expect fewer choices south of the channel than a small ship gets.15 At Petermann, Pleneau and the Yalours, nobody may be ashore from 10 p.m. to 4 a.m., apart from organized overnight stays at Petermann and Pleneau.15 The Port Lockroy museum, the Neko Harbour landing and Cuverville Island lie to the north, and many itineraries combine them with the channel.
Who was the Lemaire Channel named after?
Charles Lemaire, a Belgian explorer of the Congo who helped organize Adrien de Gerlache's Belgian Antarctic Expedition and who, Oceanwide notes, never set foot in Antarctica himself.17 A German expedition sighted the channel in 1874, Gerlache's expedition first navigated and roughly charted it on February 12, 1898, and the French Antarctic Expedition charted it further in 1904.1 (The US gazetteer dates the first passage to December 1898.)8
Which cruises sail the Lemaire Channel?
The voyages we track that name the channel word it very differently, and the wording tells you how firmly each operator plans the transit. From firmest to loosest:
| Voyage | Operator and ship | What the itinerary says |
|---|---|---|
| Elephant Island, Weddell Sea and Polar Circle, March 2027 | Oceanwide, Plancius | Day 8 is "passing the Lemaire Channel" on the way to Port Charcot17 |
| Antarctic Circle, January 2027 | Poseidon, Sea Spirit | "We plan to pass through"22 |
| Extended and Ultimate Antarctic Circle Crossings | Polar Latitudes | The channel is the trip's "crown jewel", reached before the attempt on the Circle213 |
| Realm of Penguins and Icebergs | Poseidon, Sea Spirit | "We hope to show you" the channel5 |
| Basecamp, Polar Circle and March whale watching | Oceanwide, Hondius and Ortelius | You can sail through "if the ice allows it"21119 |
| Antarctic Express: Crossing the Circle | Quark, Ocean Explorer | A possible excursion that "may become impassable"10 |
| Antarctica in Depth; Antarctica and the Weddell Sea | Scenic, Scenic Eclipse and Scenic Eclipse II | It "could be" the next destination420 |
| Iconic Antarctica | HX, Roald Amundsen and Fridtjof Nansen | Plans the Penola Strait; the Lemaire only if ice and sea allow6 |
| Highlights of Antarctica and HX's other Antarctic voyages | HX, Fridtjof Nansen and Roald Amundsen | Named in a standard list of possible sites that appears on each voyage page9 |
Even the firmest wording is a plan, not a promise, given the ice. On price, Poseidon's Realm of Penguins on November 28, 2026 starts at $8,846 per person in a Triple Suite shared by three, after a 25% discount for new bookings made October 1 to November 30, 2026 (was $11,795); it includes a hotel night in Ushuaia, a drinks package and a parka, but not airfare, read October 15, 2026.5
Voyages that visit Lemaire Channel
Landings depend on weather and ice, so no operator can promise a specific site.
Antarctica: Whale Watching (Plancius)
Oceanwide Expeditions · Plancius · 10 days · from Ushuaia, Argentina · Sail both ways · March
Fare details
Lowest published fare, one berth in a shared quadruple porthole cabin on Plancius, Mar 26, 2027 (two female berths showing when read); a twin porthole is $8,700 per person (one male berth showing); can be combined with the Atlantic Odyssey at 10% off; flights to Ushuaia not included; read Oct 15, 2026
from $7,050about $705 a day
ViewAntarctica: Whale Watching Discovery and Learning Voyage (Ortelius)
Oceanwide Expeditions · Ortelius · 11 days · from Ushuaia, Argentina · Sail both ways · March
Fare details
Lowest published fare, one berth in a shared quadruple porthole cabin on Ortelius, Mar 18, 2027 (one female berth showing when read); a twin porthole is $9,650 per person; flights to Ushuaia not included; read Oct 15, 2026
from $7,800about $709 a day
ViewAntarctica: Whale Watching Discovery and Learning Voyage (Hondius)
Oceanwide Expeditions · Hondius · 11 days · from Ushuaia, Argentina · Sail both ways · March
Fare details
Lowest published fare, one berth in a shared quadruple porthole cabin, Mar 17, 2027 (one female berth showing when read; the Mar 7 departure starts at $9,200); flights to Ushuaia not included; read Oct 14, 2026
from $7,800about $709 a day
ViewHighlights of Antarctica
HX Expeditions · Fridtjof Nansen · 12 days · Buenos Aires, Argentina (flight to Ushuaia included) to Buenos Aires, Argentina (flight from Ushuaia included) · Sail both ways · October to March
Fare details
Lowest published fare, per person with two sharing, on Fridtjof Nansen, Oct 30, 2026, after HX 130th anniversary discounts (was $10,589; the extra anniversary discount applies only to bookings made by Nov 9, 2026); includes a Buenos Aires hotel night with breakfast, economy flights between Buenos Aires and Ushuaia, drinks and gratuities. Four January and February departures sail on Roald Amundsen instead.
from $8,830about $736 a day
ViewClassic Antarctica, Realm of Penguins and Icebergs (Sea Spirit)
Poseidon Expeditions · Sea Spirit · 12 days · from Ushuaia, Argentina · Sail both ways · November to December, February
Fare details
Lowest published fare, per person in a Triple Suite shared by three, Nov 28, 2026, after a 25% Seasonal Savings discount for new bookings made Oct 1 to Nov 30, 2026 (was $11,795); program days include a hotel night in Ushuaia; drinks package and parka included; flights not included; read Oct 15, 2026
from $8,846about $737 a day
ViewHighlights of Antarctica (Roald Amundsen)
HX Expeditions · Roald Amundsen · 12 days · Buenos Aires, Argentina (flight to Ushuaia included) to Buenos Aires, Argentina (flight from Ushuaia included) · Sail both ways · January to February
Fare details
Lowest published fare on Roald Amundsen, per person with two sharing, Jan 9, 2027, after HX 130th anniversary discounts (was $11,773; the extra anniversary discount applies only to bookings made by Nov 9, 2026); Jan 19 and Feb 8 start at $10,141 and Jan 29 at $12,066; read Oct 15, 2026. Includes a Buenos Aires hotel night with breakfast, economy flights between Buenos Aires and Ushuaia, drinks and gratuities; five days in Antarctica.
from $9,736about $811 a day
ViewAntarctica: Basecamp, with free camping, kayaking, snowshoeing and mountaineering (Hondius)
Oceanwide Expeditions · Hondius · 13 days · from Ushuaia, Argentina · Sail both ways · November
Fare details
Lowest published fare, one berth in a shared quadruple porthole cabin, Nov 23, 2026 (one female berth showing when read); all Basecamp activities included; flights to Ushuaia not included; read Oct 14, 2026
from $10,150about $781 a day
ViewAntarctica & Falklands Expedition, Buenos Aires to Montevideo
HX Expeditions · Fridtjof Nansen · 19 days · Buenos Aires, Argentina (flight to Ushuaia included) to Montevideo, Uruguay · Sail both ways · March
Fare details
Lowest published fare, per person with two sharing, on Fridtjof Nansen, Mar 19, 2027, after HX 130th anniversary discounts (was $14,398; the extra anniversary discount applies only to bookings made by Nov 9, 2026); includes a Buenos Aires hotel night and a one-way flight to Ushuaia; the ship crosses the Drake both ways, then calls in the Falklands and at Puerto Madryn.
from $10,485about $552 a day
ViewIconic Antarctica: The Explorer's Route
HX Expeditions · Roald Amundsen · 16 days · Buenos Aires, Argentina (flight to Ushuaia included) to Buenos Aires, Argentina (flight from Ushuaia included) · Sail both ways · October to December, March
Fare details
Lowest published fare, per person with two sharing, on Roald Amundsen, Mar 4, 2027, after HX 130th anniversary discounts (was $13,861; the extra anniversary discount applies only to bookings made by Nov 9, 2026); includes a Buenos Aires hotel night and economy flights between Buenos Aires and Ushuaia. All 2026-27 departures are on Roald Amundsen.
from $10,863about $679 a day
ViewAntarctica: Polar Circle, Deep South Discovery Voyage (Ortelius)
Oceanwide Expeditions · Ortelius · 13 days · from Ushuaia, Argentina · Sail both ways · March
Fare details
Lowest published fare, one berth in a shared quadruple porthole cabin on Ortelius, Mar 6, 2027 (only male berths offered when read); a twin porthole is $13,550 per person; flights to Ushuaia not included; read Oct 14, 2026
from $11,000about $846 a day
ViewAntarctic Peninsula Expedition Cruise, Including South Shetland Islands
Heritage Expeditions · 12 days · Ushuaia, Argentina (hotel night included) to Ushuaia, Argentina · Sail both ways · November to January
Fare details
Deck 3 Superior Stateroom, per person with two sharing, on Heritage Discoverer, Nov 22 and Dec 2, 2027, after 20% off for bookings made before Oct 30, 2026 (regular $13,650); the Dec 12, 2027 and Jan 10, 2028 departures were sold out. Includes one hotel night with dinner and breakfast, transfers, meals, and house beer, wine and soft drinks with lunch and dinner; excludes flights, kayaking, gratuities and laundry. Read Oct 15, 2026.
from $11,020about $918 a day
ViewAntarctica: Elephant Island, Weddell Sea and Polar Circle (Plancius)
Oceanwide Expeditions · Plancius · 15 days · from Ushuaia, Argentina · Sail both ways · March
Fare details
Lowest published fare, one berth in a shared quadruple porthole cabin on Plancius, Mar 12, 2027 (one cabin showing when read); twin porthole berths at $14,350 were waitlisted and a twin window is $15,000 per person; flights to Ushuaia not included; read Oct 15, 2026
from $11,700about $780 a day
ViewAntarctic Circle Expedition
HX Expeditions · Roald Amundsen · 16 days · Buenos Aires, Argentina (flight to Ushuaia included) to Buenos Aires, Argentina (flight from Ushuaia included) · Sail both ways · December, February
Fare details
Lowest published fare, per person with two sharing, on Roald Amundsen, Dec 26, 2026, after HX 130th anniversary discounts (was $16,469; the extra anniversary discount applies only to bookings made by Nov 9, 2026); the Feb 18, 2027 departure starts at $18,476; includes a Buenos Aires hotel night and economy flights between Buenos Aires and Ushuaia.
from $13,578about $849 a day
ViewExtended Antarctic Circle Crossing (Discoverer)
Polar Latitudes Expeditions · 14 days · from Ushuaia, Argentina · Sail both ways · December
Fare details
Lowest fare, per person sharing a two-bed Ocean Stateroom, Dec 28, 2026, sale price (regular $21,695); includes one Ushuaia hotel night, not flights; read Oct 15, 2026
from $15,187about $1,085 a day
ViewCrossing 66º South, Antarctic Circle (Sea Spirit)
Poseidon Expeditions · Sea Spirit · 15 days · from Ushuaia, Argentina · Sail both ways · January
Fare details
Lowest published fare, per person in a Triple Suite shared by three, Jan 26, 2027 (shown as request availability); program days include a hotel night in Ushuaia; drinks package and parka included; flights not included; read Oct 15, 2026
from $15,295about $1,020 a day
ViewUltimate Antarctic Circle Crossing (Discoverer)
Polar Latitudes Expeditions · 15 days · from Ushuaia, Argentina · Sail both ways · January to February
Fare details
Lowest fare open to any guest, per person in an Ocean Stateroom, Feb 19, 2027, sale price (regular $20,795); Jan 27, 2027 had a men's shared Porthole berth at $16,231 and Ocean Staterooms from $18,611; includes one Ushuaia hotel night, not flights; read Oct 15, 2026
from $17,676about $1,178 a day
ViewIn-depth Antarctica, Falklands & South Georgia Expedition
HX Expeditions · 23 days · Santiago de Chile (flights to and from Punta Arenas included) to Santiago de Chile · Sail both ways · November to February
Fare details
Lowest published fare, per person with two sharing, on Fram, Nov 6, 2026, after HX 130th anniversary discounts (was $22,934; the extra anniversary discount applies only to bookings made by Nov 9, 2026); Dec 18 and Jan 8 departures started at $38,075; includes a Santiago hotel night, flights between Santiago and Punta Arenas and the South Georgia permit. Sails out via the Falklands and South Georgia and returns north across the Drake.
from $17,774about $773 a day
ViewAntarctica in Depth
Scenic Luxury Cruises & Tours · Scenic Eclipse II · 13 days · Buenos Aires, Argentina (hotel night and flight to Ushuaia included) to Buenos Aires, Argentina (flight from Ushuaia included) · Sail both ways · November, January to February
Fare details
Preferred Fare in a Deluxe Verandah Suite CA (Deck 6) on Scenic Eclipse II's Feb 25, 2027 departure, per person with two sharing, read Oct 15, 2026. The Preferred Fare takes 15% off the cruise-fare part of the $24,780 Full Fare (port charges are not discounted) plus $2,500 off in lieu of an air credit, is offered to US and Latin American residents and ends Oct 28, 2026; the Select Fare is $21,473 until Dec 31, 2026. The other Eclipse II dates cost more: Feb 14, 2027 from $21,126 (Preferred Fare in a Verandah Suite A, ends Oct 17, 2026) and Jan 5 from $24,462 (Select Fare); Jan 16 showed $22,195 with no suite open and Nov 30, 2026 was waitlisted. Includes the Buenos Aires hotel night, flights between Buenos Aires and Ushuaia, drinks, tips and Wi-Fi; helicopter flights and submersible dives cost extra.
from $18,973about $1,459 a day
ViewAntarctica in Depth
Scenic Luxury Cruises & Tours · Scenic Eclipse · 13 days · Buenos Aires, Argentina (hotel night and flight to Ushuaia included) to Buenos Aires, Argentina (flight from Ushuaia included) · Sail both ways · December to February
Fare details
Preferred Fare in a Deluxe Verandah Suite (CA, DA or DB) on Scenic Eclipse's Feb 17, 2027 departure, per person with two sharing, read Oct 15, 2026. The Preferred Fare takes 15% off the cruise-fare part of the $24,780 Full Fare (port charges are not discounted) plus $2,500 off in lieu of an air credit, is offered to US and Latin American residents, ends Oct 20, 2026, and must be paid in full within 30 days of booking or by the standard final payment date, whichever is sooner; the Select Fare on the same suites is $21,473 until Dec 31, 2026. The cheaper Verandah Suites were not available. Includes the Buenos Aires hotel night, flights between Buenos Aires and Ushuaia, drinks, tips and Wi-Fi; helicopter flights and submersible dives cost extra. Scenic Eclipse's Jan 26 and Feb 6, 2027 departures start at $21,473 (Select Fare); Dec 28, 2026 showed $20,145 with no suite open, and Dec 17 was waitlisted.
from $18,973about $1,459 a day
ViewAntarctica and the Weddell Sea
Scenic Luxury Cruises & Tours · Scenic Eclipse · 16 days · Buenos Aires, Argentina (hotel night and flight to Ushuaia included) to Buenos Aires, Argentina (flight from Ushuaia included) · Sail both ways · December
Fare details
Select Fare in a Grand Deluxe Verandah Suite DD (Deck 5) on Scenic Eclipse's Dec 3, 2026 departure, per person with two sharing, read Oct 15, 2026. The Select Fare takes 15% off the cruise-fare part of the $28,265 Full Fare (port charges are not discounted) and ends Nov 3, 2026; the Verandah and Deluxe Verandah Suites (from $23,645 Full Fare) were not available. Ten days in Antarctica, including the Weddell Sea, with an optional helicopter trip to the Snow Hill Island emperor colony at extra cost. Includes the Buenos Aires hotel night, flights between Buenos Aires and Ushuaia, drinks, tips and Wi-Fi; helicopter flights and submersible dives cost extra. Scenic Eclipse II sails the same itinerary on Dec 22, 2026 from $26,770.
from $24,434about $1,527 a day
ViewAntarctica and the Weddell Sea
Scenic Luxury Cruises & Tours · Scenic Eclipse II · 16 days · Buenos Aires, Argentina (hotel night and flight to Ushuaia included) to Buenos Aires, Argentina (flight from Ushuaia included) · Sail both ways · December
Fare details
Select Fare in a Deluxe Verandah Suite DA (Deck 5) on Scenic Eclipse II's Dec 22, 2026 departure, per person with two sharing, read Oct 15, 2026. The Select Fare takes 5% off the cruise-fare part of the $28,035 Full Fare (port charges are not discounted) and ends Nov 22, 2026; the Verandah Suites ($24,745 Full Fare) were not available. Ten days in Antarctica including the Weddell Sea, returning Jan 6, 2027. The itinerary offers a helicopter trip to Snow Hill Island at extra cost but says the emperor penguins are only there at the start of the season. Includes the Buenos Aires hotel night, flights between Buenos Aires and Ushuaia, drinks, tips and Wi-Fi; helicopter flights and submersible dives cost extra.
from $26,770about $1,673 a day
ViewAntarctic Express: Crossing the Circle (Ocean Explorer)
Quark Expeditions · Ocean Explorer · 11 days · Punta Arenas, Chile (charter flight to King George Island) to Punta Arenas, Chile · Fly both ways · January
Fare details
Lowest published brochure fare, Triple Suite on Ocean Explorer, Jan 22, 2027 (marked Please Call when read; the lowest cabin bookable online was a Veranda Suite at $36,195); includes flights to and from King George Island and a Punta Arenas hotel night before and after; read Oct 15, 2026
from $29,095about $2,645 a day
View
Lowest published price per person in the operator's currency, checked October 15, 2026. Taxes, flights and single supplements vary.
Sources
- 1.Lemaire Channel (Gazetteer of the British Antarctic Territory, ID 109791), UK Antarctic Place-names Committee, via the SCAR Composite Gazetteer of Antarctica (Australian Antarctic Data Centre). Accessed October 15, 2026.
- 2.Antarctica: Basecamp, m/v Hondius, 23 November to 5 December 2026 (HDS22-26), Oceanwide Expeditions. Accessed October 14, 2026.
- 3.Ultimate Antarctic Circle Crossing (15 days), Polar Latitudes Expeditions. Accessed October 15, 2026.
- 4.Antarctica in Depth 2026/2027 (tour 101S), Scenic Luxury Cruises & Tours. Accessed October 15, 2026.
- 5.Classic Antarctica: Realm of Penguins & Icebergs, 28 Nov to 9 Dec 2026, Poseidon Expeditions. Accessed October 15, 2026.
- 6.Iconic Antarctica Expedition Cruise: The Explorer’s Route (16 days, round-trip flights from Buenos Aires), HX Expeditions (Hurtigruten Expeditions). Accessed October 14, 2026.
- 7.Lemaire Channel, Oceanwide Expeditions. Accessed October 15, 2026.
- 8.Lemaire Channel (United States Gazetteer, ID 127926), US Board on Geographic Names, via the SCAR Composite Gazetteer of Antarctica (Australian Antarctic Data Centre). Accessed October 15, 2026.
- 9.Highlights of Antarctica Expedition Cruise (12 days, round-trip flights from Buenos Aires), HX Expeditions (Hurtigruten Expeditions). Accessed October 14, 2026.
- 10.Antarctic Express: Crossing the Circle, possible excursions and photo captions, Quark Expeditions. Accessed October 15, 2026.
- 11.Antarctica: Polar Circle, Deep South Discovery voyage, m/v Ortelius, 6 to 18 March 2027 (OTL29-27), Oceanwide Expeditions. Accessed October 14, 2026.
- 12.Silver Endeavour shows off its stuff, Seatrade Cruise News (Anne Kalosh), Nov 29, 2022. Accessed October 15, 2026.
- 13.Antarctica Cruises 2026-2027: departures and rates, Poseidon Expeditions. Accessed October 15, 2026.
- 14.Sun rise, set and twilight for King George Island, Port Lockroy and the Antarctic Circle, October 2026 to March 2027, U.S. Naval Observatory, Astronomical Applications Department. Accessed October 14, 2026.
- 15.Visitor Site Guidelines (landing requirements for all 45 published site guidelines), Secretariat of the Antarctic Treaty. Accessed October 14, 2026.
- 16.IAATO Operator Use of Antarctic Peninsula Landing Sites, 2025-26 Season Report and Five-Year Overview, with appendix tables (ATCM 48 IP 199), International Association of Antarctica Tour Operators (IAATO). Accessed October 15, 2026.
- 17.Antarctica: Elephant Island, Weddell Sea, Polar Circle, m/v Plancius, 12 to 26 March 2027 (PLA31-27), Oceanwide Expeditions. Accessed October 15, 2026.
- 18.Meet our 2026 Antarctic team (2026/27 season at Port Lockroy), UK Antarctic Heritage Trust. Accessed October 14, 2026.
- 19.Antarctica: Whale watching discovery and learning voyage, m/v Hondius, 17 to 27 March 2027 (HDS31-27), Oceanwide Expeditions. Accessed October 14, 2026.
- 20.Antarctica and the Weddell Sea 2026 (tour 501S), Scenic Luxury Cruises & Tours. Accessed October 15, 2026.
- 21.Extended Antarctic Circle Crossing (14 days), Polar Latitudes Expeditions. Accessed October 15, 2026.
- 22.Antarctic Circle: Crossing 66º South Latitude, 26 Jan to 9 Feb 2027, Poseidon Expeditions. Accessed October 15, 2026.