Bahamas Domestic Submarine Network (BDSNi): Connecting the Bahamas and Haiti
The Bahamas Domestic Submarine Network (BDSNi) is a 2,735 km submarine cable system owned by the Bahamas Telecommunications Company. Operational since 2006, it connects multiple islands in the Bahamas to each other and to
Port-au-Prince, Haiti. This cable serves as a critical infrastructure for regional connectivity, enabling telecommunications and internet services across the archipelago and beyond.
What makes BDSNi particularly interesting is its extensive reach within the Bahamas, linking 14 landing points across the islands and extending internationally to Haiti. However, several technical specifications, such as its design capacity, fiber pair count, and supplier information, are not publicly disclosed, leaving some aspects of the cable shrouded in uncertainty.
Quick facts
| Name | Bahamas Domestic Submarine Network (BDSNi) |
| Length | 2,735 km |
| Ready-for-Service Year | 2006 (GeoCables database; no conflicting sources identified) |
| Owner | Bahamas Telecommunications Company |
| Status | In service |
| Design Capacity | Not disclosed |
| Fiber Pairs | Not disclosed |
| Supplier | Not disclosed |
| Technology | Not disclosed |
| Landing Points | Cat Island, Clarence Town, Cockburn Town, Duncan Town, Fresh Creek, George Town, Governors Harbor, Hawksbill, Matthew Town, Mayaguana, Nassau, Port-au-Prince, Port Nelson, Rock Sound, Sandy Point |
🗺 Show Bahamas Domestic Submarine Network (BDSNi) on the interactive cable map
Route
The BDSNi connects 14 landing points across the Bahamas, including major hubs such as Nassau, George Town, and Hawksbill, as well as smaller locations like Duncan Town and Mayaguana. The cable also extends internationally to Port-au-Prince, Haiti. This route enables both domestic and international connectivity, supporting communications within the Bahamas and linking the nation to Haiti.
Several landing points are shared with other cables, such as
ARCOS at Cat Island and Nassau, and the
Bahamas Internet Cable System (BICS) at Hawksbill and Sandy Point. These overlapping connections provide redundancy and alternative routing options in case of disruptions.
Why it was built and what it carries
The BDSNi was designed to enhance telecommunications infrastructure in the Bahamas, a nation spread across numerous islands. By connecting these islands, the cable facilitates internet, voice, and data services, supporting both residential and commercial users. Its extension to Haiti adds an international dimension, enabling cross-border connectivity and fostering economic and social ties between the two countries.
While specific details about the cable's capacity and technology are not publicly disclosed, its role in connecting remote island communities suggests that it is a key enabler of digital inclusion in the region.
History: what can be established
The GeoCables database records the BDSNi's ready-for-service year as 2006, and no conflicting dates have been identified in industry sources. This timeline places the cable in the context of a broader wave of submarine cable deployments in the mid-2000s, driven by increasing demand for internet connectivity and international communications.
Capacity and technology
Publicly available information does not disclose the design capacity, number of fiber pairs, supplier, or specific technology used in the BDSNi. Without documentation from the operator, these details remain speculative. Given the cable's regional scope, it is likely tailored to meet the bandwidth needs of the Bahamas and Haiti, but precise figures cannot be confirmed.
Latency: the physics
Theoretical latency calculations for the BDSNi's wet segment indicate a one-way light propagation time of approximately 13.4 ms, with a round-trip time (RTT) floor of 26.8 ms. Real-world latency measurements, however, are influenced by additional factors such as terrestrial routing, terminal equipment, and network congestion.
Live measurements from remote probes show significant variability, with some results falling below the physical latency floor. For example, the reported minimum RTT of 22.4 ms between Port-au-Prince and Hawksbill is an artifact, likely caused by rate-limited ICMP replies from intermediate routers. Such anomalies highlight the limitations of remote probing methods in isolating cable performance.
Redundancy: what happens if it breaks
In the event of a disruption, redundancy is provided by other cables in the region. For example, ARCOS and
Bahamas 2 at Nassau, and BICS at Hawksbill and Sandy Point, offer alternative routing options. Repairing submarine cables typically involves specialized vessels and equipment, with downtime depending on the nature and location of the fault.
The BDSNi's extensive domestic reach makes redundancy within the Bahamas particularly important, as connectivity between islands is critical for local communications and services.
Bottom line
- The Bahamas Domestic Submarine Network (BDSNi) spans 2,735 km and connects 14 landing points in the Bahamas with Port-au-Prince, Haiti.
- Owned by the Bahamas Telecommunications Company, the cable has been in service since 2006.
- Key technical details, including design capacity, fiber pairs, supplier, and technology, are not publicly disclosed.
- Theoretical latency for the wet segment is approximately 13.4 ms one-way and 26.8 ms RTT, with real-world measurements showing variability due to network factors.
- Redundancy is available through other cables in the region, such as ARCOS, Bahamas 2, and BICS.