AZTI has its own and partner fleets to support oceanographic and fishery research, combining its own resources with the support of specialist companies and public institutions. This capacity ensures that scientific campaigns can be carried out at sea and in coastal areas with the highest technical and safety levels.
Owned by the Basque government, this is equipped with a hybrid nevigation system, as well as wet and dry laboratories for on-board analysis. It is used in sampling campaigns with specialised probes and satellite navigation.

This is equipped with a multibeam echo sounder, seabed mapping systems and diving equipment, making it a versatile tool for studies in coastal waters.

These are used for ancillary tasks in open water and hard-to-reach coastal areas.

AZTI expands its operational capacity through partnerships with companies such as EKOCEAN, KOTAZERO and SOS, as well as public institutions such as the General Secretariat for Fisheries and the IEO-CSIC, which provide vessels and technical support for scientific and technical campaigns.

The fleet is complemented by a specialised staff comprising researchers, skippers and professional divers, together with a wide range of oceanographic instrumentation: CTDs, ADCPs, dredges, current meters, drift buoys, probes, nets and other essential equipment for observation and sampling in the marine environment.
Sectors: Fisheries and aquaculture sector, Maritime and port infrastructure, Offshore sector
Research lines: Biotechnology, Climate change, Efficient, sustainable fisheries and aquaculture, Environmental management of seas and coasts, Operational Oceanography
Research sublines: Adapting to climate change, Aquaculture, Assessing the state of health of the marine environment, Assessment of ecosystem goods and services, Blue biotechnology, Coastal–Ocean Modelling, Conservation and restoration of marine species and habitats, Fishery technologies, Impact and environmental vigilance in the marine environment, Marine spatial management and planning, Observation and impact of climate change, Real-Time Observation and Monitoring, Sustainable fishery management, Trends and scenarios in climate change