Lynn Canal Fiber

Lynn Canal Fiber: Connecting Southeast Alaska

The Lynn Canal Fiber is a submarine cable system connecting three key locations in Southeast Alaska: Haines, Lena Point, and Skagway. Owned and operated by Alaska Power & Telephone Company (AP&T), the cable spans 138 kilometers and has been listed as in service since 2016, according to GeoCables records. This system is notable for providing improved connectivity to remote communities in Alaska, a region where terrain and weather conditions often challenge terrestrial infrastructure. What makes the Lynn Canal Fiber particularly interesting is the scarcity of publicly disclosed technical details about its design and capacity. While its stated purpose is clear-to enhance telecommunications in Southeast Alaska-specifics such as the number of fiber pairs, technology employed, or design capacity remain undocumented in public sources. This lack of transparency limits deeper analysis of its technical capabilities and operational performance.

Quick facts

Cable name	Lynn Canal Fiber
Length	138 km
Ready for service	2016 (GeoCables database value)
Owner	Alaska Power & Telephone Company (AP&T)
Status	In service
Design capacity	Not disclosed
Fiber pairs	Not disclosed
Supplier	Not disclosed
Technology	Not disclosed
Landing points	Haines (United States), Lena Point (United States), Skagway (United States)
Other cables at Lena Point	NorthStar, SEALink

Show Lynn Canal Fiber on the interactive cable map

Route

The Lynn Canal Fiber connects three landing points in Southeast Alaska: Haines, Lena Point, and Skagway. This corridor is situated along the Lynn Canal, a fjord that serves as a critical transportation and communication route in the region. The cable's placement reflects the need to link remote communities that are otherwise difficult to access due to mountainous terrain and limited road infrastructure.

Why it was built and what it carries

The Lynn Canal Fiber was built to address the connectivity needs of Southeast Alaska, where reliable telecommunications are essential for both residents and businesses. AP&T likely sought to improve internet speeds, reduce latency, and provide redundancy for existing systems. While the cable's specific data-carrying capacity is not publicly disclosed, it is reasonable to assume that it supports broadband internet services and other telecommunications for the connected communities.

History: what can be established

GeoCables records indicate that the Lynn Canal Fiber became ready for service in 2016. No conflicting dates have been identified from other industry sources, so this timeline appears consistent. The cable's development aligns with AP&T's broader mission of enhancing telecommunications infrastructure in Alaska. However, public documentation about the planning, construction, or commissioning phases is limited.

Capacity and technology

The design capacity, fiber pair count, supplier, and technology of the Lynn Canal Fiber are not disclosed in publicly available sources. Without operator documentation, attributing specific technical characteristics would be speculative. This lack of transparency is not uncommon for regional submarine cables, particularly those serving smaller markets.

Latency: the physics

The theoretical one-way light propagation latency over the 138-kilometer wet segment of the Lynn Canal Fiber is approximately 0.7 milliseconds, resulting in a round-trip time (RTT) floor of 1.4 milliseconds under ideal conditions. However, real-world latency is higher due to factors such as land tails, terminal equipment, and network routing. Live measurements from remote probes provide insight into end-to-end latency for internet traffic involving Skagway. These measurements include:

• Moscow -> Skagway: min 220.9 ms, avg 222.7 ms
• Minsk -> Skagway: min 188.3 ms, avg 189.9 ms
• Kyiv -> Skagway: min 202.6 ms, avg 202.9 ms
• Sydney -> Skagway: min 186.1 ms, avg 187.2 ms
• Cape Town -> Skagway: min 276.2 ms, avg 277.1 ms
• Saint Petersburg -> Skagway: min 207.6 ms

These values reflect the full internet path, including terrestrial segments and routing inefficiencies, rather than the cable's isolated performance.

Redundancy: what happens if it breaks

If the Lynn Canal Fiber were to experience a fault, redundancy would depend on alternative systems such as the NorthStar and SEALink cables, which also land at Lena Point. Repairing submarine cables in Alaska can be challenging due to harsh weather conditions and the remote nature of the region. Standard industry practices for cable repair involve deploying specialized ships equipped with remotely operated vehicles (ROVs) to locate and mend the fault.

Bottom line

• The Lynn Canal Fiber is a 138-kilometer submarine cable connecting Haines, Lena Point, and Skagway in Southeast Alaska.
• Owned by Alaska Power & Telephone Company (AP&T), it has been listed as in service since 2016.
• Technical details such as design capacity, fiber pairs, supplier, and technology are not publicly disclosed.
• Theoretical RTT over the wet segment is 1.4 ms, but real-world latency is higher due to network factors.
• Redundancy may rely on other cables at Lena Point, such as NorthStar and SEALink.