World Ocean Simulation System

WOSS is a multi-threaded C++ framework that permits the integration of any existing underwater channel simulator that expects environmental data as input and provides as output a channel realization.
Currently, WOSS integrates the Bellhop ray-tracing program.
Thanks to its automation the user only has to specify the location in the world and the time where the simulation should take place. This is done by setting the simulated date and the wanted latitude and longitude of every node involved. The simulator automatically handles the rest (check technical description).
WOSS can be integrated in any network simulator or simulation tool that supports C++.

Check the third-party libraries section for the latest library and database requirements and compatibilies.

Latest releases

Latest WOSS released: v1.12.5 (July 2023)

Latest WOSS-NS3 released: v1.12.5 (July 2023)

Latest Dbs released: v1.6.0 (January 2021)

Latest news

WOSS and WOSS-NS3 users are required to update to the latest NetCDF4-C and NetCDF4-C++ recommended libraries due to bugs in the previous versions.

From WOSS 1.10.0 support for the WOA 2013 and 2018 SSP datasets has been introduced, which has an increased resolution of 0.25 degrees.
Please see the Technical description for further details.

WOSS 1.9.0 introduces support for the GEBCO 2019 and onward datasets, which require the NetCDF4 + HDF5 libraries.

WOSS version 1.9.0 or greater is matching the output syntax of the Acoustic Toolbox version cited in the “Recommended libraries” section.
It is strongly advised to upgrade the library to this version.
Old AT library and syntax can be still used with WOSS, however the syntax configuration must be changed accordingly.


This software has been developed by Federico Guerra and SIGNET lab, University of Padova, in collaboration with the NATO Centre for Maritime Research and Experimentation ( ; E-mail:, whose support is gratefully acknowledged.

The development of:
– the option to simulate the time evolution of environmental parameters
– the option to model surface waves using realistic wave spectra
has been supported in part by the European Commission under the 7th Framework Programme, CLAM project (Grant Agreement no. 258359).


WOSS – World Ocean Simulation System –
Copyright (C) 2009 – Federico Guerra and regents of the SIGNET lab, University of Padua
This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License version 2 as published by the Free Software Foundation
This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see


Federico Guerra


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