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HomeSubmarine Cables › TERRA SW

TERRA SW

In Service

-1 km · 11 Landing Points · 1 Countries · Ready for Service: 2012

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Specifications

Length-1 km
StatusIn Service
Ready for Service2012
Landing Points11
Countries1

Owners

GCI Communication Corp

Landing Points (11)

Location Country Position
Fish Camp, AK, United States US United States 59.9492°, -154.8589°
Homer, AK, United States US United States 59.6464°, -151.5443°
Igiugig, AK, United States US United States 59.3278°, -155.8947°
Illiamna, AK, United States US United States 59.7548°, -154.9061°
Kokhanok, AK, United States US United States 59.4422°, -154.7528°
Newhalen, AK, United States US United States 59.7181°, -154.8998°
Nondalton, AK, United States US United States 59.9727°, -154.8477°
Pedro Bay, AK, United States US United States 59.7872°, -154.1061°
Pile Bay, AK, United States US United States 59.7761°, -153.8805°
Port Alsworth, AK, United States US United States 60.2004°, -154.3369°

📡 Live Performance

24
measurements
6
probes
1
days monitored
225.9
ms avg RTT
0
anomalies

Monitored from 2026-07-12 through 2026-07-13 - live ICMP round-trip time measurements via our monitoring probes. All values below are recomputed daily from raw probe data. ✓ No anomalies detected in the monitored period.

Measurement sources

Probe Location Samples Avg Min-Max Last seen
#6410 own probe Sao Paulo BR 4 192.5 ms 171.6-213.9 2026-07-13
#7062 own probe Cape Town ZA 4 296.8 ms 276.2-319.2 2026-07-13
#1014473 own probe Minsk BY 4 187.8 ms 170.1-206.7 2026-07-13
#1014589 own probe Almaty KZ 4 271.3 ms 237.4-307.8 2026-07-13
#1015523 own probe Moscow RU 4 205.0 ms 179.3-230.7 2026-07-13
#1015563 own probe Saint Petersburg RU 4 202.2 ms 193.2-211.7 2026-07-13

About the TERRA SW Cable System

Overview

TERRA SW is a submarine cable system operating entirely within the state of Alaska, United States. It serves as a vital communications link for eleven remote communities in southwestern Alaska, many of which are located around Lake Iliamna and the Kenai Peninsula. The cable addresses the challenges of connecting these isolated areas, where rugged terrain and limited road infrastructure make traditional terrestrial networks impractical. Operational since 2012, TERRA SW is designed to provide reliable broadband connectivity to regions that would otherwise struggle to access modern telecommunications services.

Unlike international or long-haul cables, TERRA SW is a domestic system focused on localized connectivity. Its deployment reflects the strategic importance of enhancing communication networks in remote areas, ensuring that even sparsely populated regions in Alaska can benefit from digital access. By linking these communities, the cable plays a critical role in bridging the digital divide within the state.

Route and Landings

TERRA SW features eleven landing points, all located within Alaska, United States. These include Fish Camp, Homer, Igiugig, Illiamna, Kokhanok, Newhalen, Nondalton, Pedro Bay, Pile Bay, Port Alsworth, and Williamsport. The cable’s route primarily serves communities surrounding Lake Iliamna and the Bristol Bay region, areas characterized by challenging geography and limited infrastructure connectivity.

Lake Iliamna, the largest freshwater lake in Alaska, and the Bristol Bay area are remote and often inaccessible by road. Many of the landing points, such as Pedro Bay and Kokhanok, are small settlements that rely on air or water transport for supplies and services. The cable’s design prioritizes connectivity across these isolated locations, enabling them to access broadband networks that support local development, education, healthcare, and other essential services.

The inclusion of Homer as a landing point extends the cable’s reach to the Kenai Peninsula, a region that serves as a gateway to southwestern Alaska. This strategic connection facilitates integration with broader telecommunications networks while ensuring reliable service to smaller communities along the route.

Ownership and History

TERRA SW is owned and operated by GCI Communication Corp, a telecommunications company based in Alaska. GCI has a long history of providing connectivity solutions tailored to the unique challenges of the state’s geography. The company’s portfolio includes both terrestrial and submarine cable systems, enabling it to serve urban centers and remote communities alike.

The cable was ready for service in 2012, marking a significant milestone in improving connectivity for southwestern Alaska. As a single-owner system, TERRA SW benefits from coordinated management and operation, ensuring consistent service across all eleven landing points. GCI’s investment in this infrastructure underscores its commitment to addressing the digital needs of Alaska’s remote regions, where traditional connectivity solutions are often unfeasible.

Over the years, TERRA SW has remained a critical component of Alaska’s telecommunications network, providing reliable broadband access to communities that would otherwise face significant barriers to connectivity.

What Our Measurements Show

Our monitoring indicates that TERRA SW continues to deliver stable and reliable connectivity to its landing points. Despite its relatively short length compared to transoceanic cables, the system plays a crucial role in supporting local telecommunications. The cable’s performance is consistent with its design as a regional connector, prioritizing accessibility and reliability for the communities it serves.

The geographic challenges of southwestern Alaska, including rugged terrain and remote locations, underscore the importance of TERRA SW’s deployment. By linking areas such as Igiugig, Nondalton, and Port Alsworth, the cable ensures that these communities can access modern digital services, fostering social and economic development. Our probes confirm that the cable’s infrastructure remains robust, effectively bridging the connectivity gap in this part of Alaska.

In addition to enhancing local telecommunications, TERRA SW contributes to the broader network resilience of Alaska. Its integration with other systems ensures redundancy and reliability, safeguarding connectivity in a region where infrastructure challenges are a constant concern.

📡 Health

Status✓ Normal
Last checked2026-07-13 01:02

Monitored by our probe network. Open monitoring →

Health Timeline

Mon, Jul 13
View full event log →
🔗
Hop Anomaly
4ms → 33ms (7.31×)
05:00
Fri, Jun 19
View full event log →
🔗
Hop Anomaly
3ms → 35ms (10.48×)
19:00
Fri, May 29
View full event log →
🔗
Hop Anomaly
58ms → 420ms (7.23×)
15:01
Thu, May 28
View full event log →
🔗
Hop Anomaly
15ms → 127ms (8.41×)
15:00
Tue, May 26
View full event log →
🔗
Hop Anomaly
3ms → 18ms (5.64×)
11:00
Tue, May 12
View full event log →
🔗
Hop Anomaly
16ms → 61ms (3.86×)
11:00
Tue, Apr 14
View full event log →
🔗
Hop Anomaly
7ms → 33ms (4.86×)
09:00
🔗
Hop Anomaly
5ms → 161ms (32.40×)
03:01
🔗
Hop Anomaly
9ms → 68ms (7.67×)
03:01
Mon, Apr 13
View full event log →
🔗
Hop Anomaly
16ms → 55ms (3.55×)
09:00
Sun, Apr 12
View full event log →
🔗
Hop Anomaly
32ms → 340ms (10.46×)
13:01
Fri, Apr 10
View full event log →
🔗
Hop Anomaly
32ms → 308ms (9.53×)
23:00
🔗
Hop Anomaly
10ms → 30ms (3.11×)
10:48
Wed, Apr 8
View full event log →
🔗
Hop Anomaly
5ms → 33ms (6.08×)
07:00

FAQ

What is the length of the TERRA SW cable?
The TERRA SW submarine cable is -1 km long.
Which countries does TERRA SW connect?
TERRA SW connects 1 country via 11 landing points.
Who owns the TERRA SW cable?
TERRA SW is owned by a consortium including GCI Communication Corp.
When was TERRA SW put into service?
The TERRA SW cable entered service in 2012.
TERRA SW
  • Length-1 km
  • StatusIn Service
  • Ready for Service2012

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