Association Technique Maritime et Aéronautique

Numéro : 2779 - Year : 2022

Study and qualification of a launch and recovery system for USV

Pierre-Emmanuel GUILLERM, Julien NICOLAS - Naval Group, Hydrodynamics, Lorient (France)

Pierre-Alan MICHEL - Naval Group, Marine systems – Lorient (France)

Nicolas CARETTE - MARIN – Wageningen (The Netherlands)

The criteria used today for assessing ship seakeeping are mainly drawn from STANAG 4154 or other rather old references, not necessarily aligned with the performance of today’s ships and their equipment. Moreover, today’s criteria are global, mostly focused on the capacities of an operator on the mother-ship and not defined regarding a specific technology. On the other hand, today’s simulations and testing capacities allow modelling more complex systems and then to get a finer understanding of complex marine system behaviour. 

USV vehicles have a growing success for mine warfare. These USVs are 10 m to 20 m craft displacing over 10 t. Moreover, they are equipped with many electronic devices (sensors, sonar, payloads) which require special care. Many Launch and Recovery Systems (LARS) exist to operate such craft at sea: crane, davit, ramp… Consequently, criteria and criteria limits based on the type of LARS and the USV characteristics must be identified to assess accurate and realistic operability limits of such systems.

This document presents a Naval Group study to assess today’s USV LARS operations and systems. The proposed methodology makes a practical use of complementary tools such as multibody simulations, seakeeping tests and full-scale trials.

This paper is written in English


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