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BCS North - Phase 1

In Service

513 km · 5 Landing Points · 2 Countries · Ready for Service: 1998

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Specifications

Length513 km
StatusIn Service
Ready for Service1998
Landing Points5
Countries2

Owners

Arelion

Landing Points (5)

Location Country Position
Hanko, Finland FI Finland 59.8232°, 22.9682°
Haradsholm, Finland FI Finland 60.3010°, 22.3021°
Helsinki, Finland FI Finland 60.1711°, 24.9325°
Mariehamn, Finland FI Finland 60.1138°, 19.9379°
Stavsnas, Sweden SE Sweden 59.2928°, 18.6883°

About the BCS North - Phase 1 Cable System

BCS North - Phase 1 is a point-to-point submarine cable linking Finland and Sweden. Landing at Hanko, Haradsholm, Helsinki, Mariehamn, Stavsnas, it provides a direct fiber-optic path between the two countries, serving as both a primary data route and a redundancy option for neighboring cable systems. Submarine cables in this region contribute to a mesh of redundant paths that keep internet traffic flowing even when individual systems are damaged or under maintenance. This cable is part of GeoCables' continuous monitoring program — RIPE Atlas probes measure latency around the clock, flagging anomalies when RTT deviates significantly from established baselines.

📡 Health

Status✓ Normal
RTT73.93 ms / base 48.00 ms
Last checked2026-04-19 06:32

Monitored using RIPE Atlas probes. Open monitoring →

📊 RTT History

Route: #40 → Helsinki Measured: 2026-04-19 06:32
73.9 ms
Min Avg Max #
7 days 9.8 51.8 101.7 36
30 days 9.8 51.8 101.7 36
60 days 9.8 51.8 101.7 36

Health Timeline

Sat, Apr 18
View full event log →
Helsinki
RTT Spike
46ms → 102ms (2.23×)
02:31
Fri, Apr 17
View full event log →
Helsinki
Resolved
39ms → 13ms
20:31
📊
Helsinki
Improving
39ms → 48ms
20:00
Helsinki
RTT Spike
39ms → 92ms (2.37×)
19:02
🔴
Helsinki
Anomaly Confirmed
39ms → 92ms (2.37×)
19:02
🚨
Helsinki
Alert Created
39ms → 92ms (2.37×)
19:02
Helsinki
RTT Spike
35ms → 92ms (2.63×)
18:32
🔗
Hop Anomaly
20ms → 795ms (39.06×)
18:30
Helsinki
Resolved
37ms → 10ms
16:31
📊
Helsinki
Improving
37ms → 12ms
16:00
Helsinki
RTT Spike
37ms → 81ms (2.17×)
15:01
🔴
Helsinki
Anomaly Confirmed
37ms → 81ms (2.17×)
15:01
🚨
Helsinki
Alert Created
37ms → 81ms (2.17×)
15:01
Helsinki
RTT Spike
36ms → 74ms (2.07×)
14:31
Sat, Apr 11
View full event log →
🔗
Hop Anomaly
5ms → 91ms (16.90×)
23:00
Sat, Apr 4
View full event log →
🔗
Hop Anomaly
6ms → 51ms (8.56×)
19:00

FAQ

What is the length of the BCS North - Phase 1 cable?
The BCS North - Phase 1 submarine cable is 513 km long.
Which countries does BCS North - Phase 1 connect?
BCS North - Phase 1 connects 2 countries via 5 landing points.
Who owns the BCS North - Phase 1 cable?
BCS North - Phase 1 is owned by a consortium including Arelion.
When was BCS North - Phase 1 put into service?
The BCS North - Phase 1 cable entered service in 1998.
BCS North - Phase 1
  • Length513 km
  • StatusIn Service
  • Ready for Service1998

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