Capabilities — equipment, procedures and quality control

Equipment

Equipment	Make and model	Availability
Multibeam echosounder	HydroTech MS400U	Owned
Dual-frequency singlebeam echosounder	Teledyne Odom EchoTrac E20	Owned
Side scan sonar	StarFish 452F	Owned
Sub-bottom profiler	EdgeTech 3400-OTS · CHIRP 2–16 kHz	By agreement
Sound velocity profilers	Valeport SWIFT SVP · 2 units	Owned
GNSS receivers	Toknav H68G · 4 units; Emlid Reach RS2 · 2 units	Owned
Data collector	Toknav	Owned
Tide gauge	Onset HOBOlink RX2100	Owned
Portable turbidity meter	Apera Instruments TN400	Owned
Acoustic Doppler current profiler (ADCP)	Mobilised by rental for each project; acquisition in progress	By agreement
Unmanned aircraft (UAV)	DJI Matrice 350 RTK · DJI Matrice 4E · DJI Mavic 2 Pro	Owned
Airborne LiDAR sensor	GeoSun GS-260X · Hesai XT-M2X laser, GeoSun AGS 303 POS, 26 MP RGB camera	Owned
Mobile LiDAR scanner	GeoSun GS-120G	Owned
Survey vessels	Abigail V for multibeam and a launch for singlebeam, as the project requires	By agreement
Correction radio link	Harxon eRadio HX-DU8616D PRO	Owned
Field connectivity	Starlink	Owned

Owned: company equipment. By agreement: resources mobilised for each project, standard practice for vessels. The table lists the main hydrographic acquisition, positioning, aircraft and LiDAR equipment; the full inventory, with serial numbers, is provided on request for tender processes.

Software

Software	Used for	Availability
HYPACK	Acquisition, post-processing and volume computation	Owned
gAirHawk	Post-processing of the GS-260X LiDAR point cloud	Owned
Carlson SurvPC	GNSS field surveying and stakeout	Owned
Terralens	In-house project management and tracking platform	Owned

The system in the field

Valeport SWIFT sound velocity profiler on the vessel's deck — **Sound velocity profiler**Valeport SWIFT SVP

Teledyne Odom Echotrac E20 singlebeam echosounder — **Singlebeam echosounder**Teledyne Odom Echotrac E20

Multibeam echosounder head and cables in its transport case — **Multibeam echosounder**HydroTech MS400U

Portable turbidity meter with its calibration vials in the case — **Portable turbidity meter**Apera Instruments TN400ISO 7027

Yellow EdgeTech 3400-OTS sub-bottom profiler with its pole mount — **Sub-bottom profiler**EdgeTech 3400-OTSPuerto Caldera2023

StarFish 452F side scan sonar with its cable — **Side scan sonar**StarFish 452FPuerto Caldera2023

Field acquisition system with its components labelled — **Field acquisition system**GNSS collectorSub-bottom profilerSide scan

The survey vessel Abigail V alongside, with the multibeam pole mounted on her side — **Survey vessel**Abigail VMultibeam

In the field

Sunrise over the port seen from the survey vessel's cabin — **Start of the survey day**Puerto CalderaDredging 2025

Acquisition station on board: monitor with the navigation software and the port chart — **Acquisition station on board**Abigail VDredging 2025

On-board monitors with the multibeam coverage over the port chart — **Coverage over the port chart**Abigail VDredging 2025

Acquisition screen with multibeam coverage along the berth face, coloured by depth — **Multibeam coverage in real time**Puerto CalderaDredging 2025

Multibeam surface on the on-board monitor, with a vessel alongside beyond the window — **The surface builds as the vessel runs its lines**Puerto CalderaDredging 2025

Illuminated cruise ship at the quay at night, seen from the water — **Night work in port**Puerto Caldera

Quality control

Every stage of a survey is carried out under the company's written procedures, applied by field and office staff.

Multibeam patch test

Calibration of the system's angular offsets before every campaign.

Sound velocity profile

Measured on every campaign, as it varies with water temperature and salinity and directly affects computed depth.

Uncertainty computation (TPU)

Propagation of system uncertainties through to each delivered sounding, following the approach the IHO S-44 standard uses to express survey quality.

Bar check

Echosounder verification with a plate lowered beneath the transducer to known depths, before the survey starts.

Post-processing and data cleaning

Data cleaning and verification before delivery, under a written procedure.

Tide reduction

Referred to the level agreed with the client; in ports, usually mean low water springs.

On the S-44 standard. The total propagated uncertainty (TPU) computation we apply is the mechanism the International Hydrographic Organization's S-44 standard uses to express survey quality. The order of the standard that applies to a given job is agreed in the contract and demonstrated with that job's own data. It does not follow from owning a particular instrument, and this page makes no blanket claim of compliance with any order.

Reference frame and datum. In Costa Rica the coordinate system is CRTM05. The vertical reference level is agreed with the client; in port work it is normally mean low water springs. Where tender documents require it, charts are also delivered in WGS84.

Corporate details

Registered name

ACUATICSURVEY Sociedad de Responsabilidad Limitada

Corporate ID (Costa Rica)

3-102-867515

Registered address

San José, Costa Rica

Email

info@aquasurvcr.com

Provided on request for tender processes: tax registration certificate, current corporate standing certificate, full equipment schedule, technical staff CVs and client-signed experience certificates.

Download the capability statement · PDF Ficha de capacidades · español

Scope of our services

AQUASURV does not carry out dredging works: it measures, controls and verifies volumes independently of the contractor.
It does not produce official nautical charts, which are the responsibility of the national hydrographic authority.
Compliance with an S-44 order is agreed in the contract and demonstrated with the survey's own data.
Land surveying and statutory registry work are handled by our sister company, ASINGTOPO.

Visit ASINGTOPO ↗

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Equipment, procedures and quality control