Deep Blue One cable: latency up to 3.1× normal, 19 Aug 2026
What we measured
| Cable | Deep Blue One |
| Segment | Chaguaramas, TT → Cayenne, GF |
| Detected | 2026-08-19 03:05 UTC |
| Resolved | 2026-08-19 05:01 UTC |
| Duration | 1h 56m |
| Observed latency | 131.6 ms |
| Baseline | 195.1 ms · 3.13× |
| Increase | +213% |
| Severity | warning |
Who is affected
Countries where Deep Blue One comes ashore, how much of their submarine diversity this cable represents, and what our measurements into them show.
| Country | Dependence on this cable | Other submarine cables | What the measurements show |
|---|---|---|---|
| French Guiana resilience index: 40 · vulnerable |
1 of 3 cables (33% of submarine diversity) | EllaLink, Kanawa | average 154 ms over the last day vs 239 ms over 30 days - faster |
| Guyana resilience index: 37 · vulnerable |
1 of 3 cables (33% of submarine diversity) | Suriname-Guyana Submarine Cable System (SG-SCS), X-Link Submarine Cable | average 69 ms over 30 days |
| Suriname resilience index: 47 · vulnerable |
1 of 3 cables (33% of submarine diversity) | EllaLink, Suriname-Guyana Submarine Cable System (SG-SCS) | average 77 ms over the last day vs 91 ms over 30 days - faster |
| Trinidad & Tobago resilience index: 64 · moderate |
1 of 6 cables (17% of submarine diversity) | Eastern Caribbean Fiber System (ECFS), EC Link, Southern Caribbean Fiber +2 more | average 163 ms over the last day vs 157 ms over 30 days - unchanged |
Dependence is structural (share of the country's submarine cables), not a traffic share: real traffic distribution across cables is not public.
Path analysis
Traffic kept the same route. Latency rose without a visible path change, which points at congestion or a fault on the existing route rather than a reroute.
Cross-probe verdict. Too few independent vantage points were watching this endpoint to reach a cross-probe verdict.
Timeline
- Alert 2026081901: warning - ratio 3.13x
- Alert #173 improving: 1/3 consecutive OK
- Alert #173 improving: 2/3 consecutive OK
- Alert #173 resolved: RTT 131.59ms (baseline 195.12ms), 3 consecutive OK
Detection method
Latency is sampled continuously from our probe network. An alert opens when round-trip time to a monitored endpoint holds above its rolling baseline, and closes automatically once it returns. Full method is described on the methodology page.