Seakeeping performance
General information
The seakeeping performance accounts for the performance of ships in wind, waves and current. The performance can be expressed in terms of comfort, crew workability, damage to ship and cargo (see seakeeping standards) due to slamming and green water and in the end the earning capacity of the ship including the added resistance.

Services & Activities
The seakeeping performance can be assessed by means of an operability assessment where for instance the downtime and schedule reliability can be established. A dedicated selection of model tests in MARIN's Seakeeping & Manoeuvring Basin improves the accuracy of such an assessment considerably, because a number of issues are difficult to calculate or even beyond today’s capabilities of numerical tools. Examples are the behaviour at low wave encounter frequencies where steering and stability issues become important and slamming and the related increase in accelerations and bending moments.

The Trials & Monitoring Department can be involved in full-scale measurements to assess seakeeping performance.

Facilities & Tools
Seakeeping performance is tested in the following MARIN facilities:

Seakeeping performance is assessed by the tools Guiliver, safetrans, waso, shipmo, FREDYN and SHIPMO. Details on these tools can be found here.

Experience record
Seakeeping performance is established in most of the seakeeping projects. Varying from sustained speed calculations to dedicated operability assessments after seakeeping model tests including comfort and safety issues

Most recent Seakeeping performance papers presented by MARIN:
(complete overview of papers can be found under Publications)

Methodology for the design of LNG terminals in a nearshore environment
Frédérick Jaouën, Olaf Waals, Martijn de Jong, Arne van der Hout, Marios Christou, OMAE ASME 35th International Conference on Ocean, Offshore and Arctic Engineering, Busan, South Korea, 2016, 2016

Performance Measurements of European Inland Ships
M. Godjevac (TUD), K.H. van der Meij (MARIN), European Inland Waterway Navigation Conference, Budapest, 2014

Integrating hydrodynamic and nautical studies for offshore LNG operations
Arjan Voogt, Jaap de Wilde and Johan Dekker, OTC, 2014

Research into the Effects of Motion Simulation on Tugboat Captain Training and Performance in Bridge Simulators
D. ten Hove and M. Roza, HPAS2010: Human Performance At Sea, 2010

Analysis of the Tunnel Immersion for the Busan-Geoje Fixed Link Project Through Scale Model Tests and Computer Simulations
Hans Cozijn (MARIN) and Jin Wook Heo (Daewoo Engineering and Construction, Ltd.), OMAE Conference, Honolulu, 2009

Most recent Seakeeping performance articles written for MARIN Report:
(complete overview of articles can be found under Publications)

New C-DRONE - for undisturbed wave spectrum measurements
Thijs Hasselaar, MARIN Report, 2017

Wave buoy measurements on a hexapod
Sanne van Essen, MARIN Report, 2017

FLNG ASV - Bridging engineering to operations
Noël Bovens & Gerrit van der Want, MARIN Report, 2017

Advancements in operability assessment for maintenance on offshore wind turbines
Jorrit-Jan Serraris & Erik-Jan de Ridder, MARIN Report, 2017

Defining the Nautical Safety Profile
Remco Hageman, MARIN Report, 2017

Contact
For more information on how MARIN can help your organisation with Seakeeping performance assessments, please contact the knowledge group Seakeeping at seakeeping@marin.nl or the Trials & Monitoring department at trials@marin.nl

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