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Survey fleet
In-house vessels with survey spreads permanently on board — for fast mobilisation and predictable costs.
14 m survey vessel
MV Santa Monica
A light, cost-effective platform for precise shallow-water survey (to 100 m water depth) and coastal studies. Designed for inshore and open-sea operation, she can sail from her port of call to any port in the Gulf of Guinea, with 4 surveyors and 4 crew on board for 4 to 5 consecutive days offshore.
A 3.5 × 2.3 m retractable deck platform and an A-frame make her ideal for oceanographic and core sampling (0–20 m), towed sensors and diving support when anchored. The 3.70 × 3.10 m acquisition room seats 3 to 4 online engineers with two workbenches and equipment racks.
Equipment permanently mobilised on board means minimal mobilisation time; daily hire or long-term contracts, with low fuel and oil consumption.
Specifications
| Length | 14 m |
|---|---|
| Beam | 4 m |
| Draught | 1.60 m |
| Displacement | 18 t |
| Max speed | 10 kn |
| Min. troll speed | 3 kn |
| Engines | 2 × Sole Mitsubishi diesel, 69.9 kW @ 2500 rpm |
| Hull | Steel |
| Accommodation | 4 surveyors + 4 crew |
Typical applications
- Pre-engineering, pre- and post-dredge and channel bathymetry
- Seismic survey and high-resolution description of existing structures
- Pipe and cable route, pre-lay and post-lay surveys
- Touchdown monitoring, LBL array deployment and calibration, beacon launch and recovery
- Dam construction and repair support
- Archaeology, sand search, defence and marine research
Equipment on board
- SCW-7 multipurpose electric winch, 300 m cable
- Surface positioning: RTK, DGPS, conventional and GPS gyro
- Pole-mounted: multibeam, single-beam, portable SBP, USBL
- Towed: magnetometer, side-scan sonar, sub-bottom profiler
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8.5 m fast survey craft
Immaculata Conceptio
Custom designed and built by Locatech, this aluminium survey boat is a daily-use unit for nearshore work. Thanks to her speed she can operate up to 30 NM from the coast, stand-alone or from larger ships and barges during long-term operations.
She has a moon pool, a bow mounting pole and an A-frame for towed sensors; the cabin takes a computer rack and two workstations. Built from standard aluminium plates and extrusions with widely serviceable drive trains, she needs minimal maintenance.
Available for daily charter or long-term contracts with flexible pricing.
Specifications
| Length overall | 8.4 m |
|---|---|
| Draught max. | 0.65 m |
| Displacement | 2.9 t |
| Max speed | 22 kn |
| Min. troll speed | 4 kn |
| Engine | Yanmar 4LHA, 220 hp |
| Hull | Aluminium |
| Range | Up to 30 NM offshore |
Typical applications
- Coastal and port bathymetry, channel bathymetry
- Pre- and post-dredge bathymetry
- Pre-engineering, pre-lay and post-lay surveys
- Touchdown monitoring, LBL deployment and calibration, beacons
- Dam construction and repair support
- Archaeology, sand search, defence and marine research
Equipment on board
- Surface positioning: DGPS / RTK
- Gyro: GPS gyro / conventional gyro
- Hull-mounted: multibeam, single-beam, USBL transducer
- Pole-mounted: side-scan sonar, sub-bottom profiler, subsurface positioning
- Towed: side-scan sonar, magnetometer, sparker and boomer
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Inshore survey boats
Boalondo 1 & 2
Two light inshore boats that complement Santa Monica and Immaculata Conceptio for rivers, estuaries and very shallow water.
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Third-party vessels
For large-scale projects, Locatech Services draws on third-party naval support, mobilising its own survey spreads and crews on chartered vessels.
Planning a survey in the Gulf of Guinea?
Tell us about the site, the deliverables and the timing — we will come back with a method and a quote.