Single-Course English 5 ECTS

Marine and ocean engineering

Overall Course Objectives

To describe all significant hydrodynamic forces on fixed, bottom-supported and floating marine structures / vessels such that the student will be able to perform overall load and motion estimations as well as detailed numerical calculations of actual structures / vessels.

Learning Objectives

  • describe flow processes around slender marine structures with cylindrical structural elements (or structure), such as marine pipelines, offshore wind turbine foundations, and fixed offshore platforms.
  • describe processes related to current and wave forces / loads on these structures.
  • explain and analyse the in-line drag and inertia forces (the Morison equation).
  • explain and analyse the cross-flow (lift) force.
  • apply the Morison equation (in-line force) and cross-flow (lift) force to evaluate the stability of simple marine structures (e.g. marine pipelines).
  • describe flow processes around large bodies (a large vertical circular cylinder) and analyse the forces on these structures.
  • describe and evaluate vortex- and flow-induced vibrations and motions
  • explain and analyse irregular wave time series in time and frequency domain, short-term and long-term statistics
  • characterize and describe ocean wave systems in terms of sea states and wave energy density spectra
  • describe and apply motion transfer functions to investigate the seakeeping ability of floating structures / vessels (e.g. ships)
  • apply the Morison equation for a simple analysis of bottom-supported and floating structures
  • describe the fundamentals related to strength calculations of long floating structures / vessels (e.g. ships)

Course Content

Short- and long-term marine wave climate in the time and frequency domain offshore and on deep water (irregular and three-dimensional waves, ocean wave spectra); Current and wave forces on cylindrical structures applicable to marine pipelines/cables, offshore wind turbine foundations and fixed and bottom-supported offshore platforms (drag and inertia forces, and the Morison equation, cross-flow lift forces). Flow- and vortex-induced vibrations. Motion transfer function (response amplitude operator, RAO) and response spectra applicable to ships and floating structures (wave-induced motions) including simple strength calculations.

Recommended prerequisites

41111/41102/41312/41202/41201, Assignments are typically done with Excel and/or Matlab (Python or R) supplemented by Maple.

Teaching Method

Lectures, assignments


See course in the course database.





13 weeks


DTU Lyngby Campus

Course code 41107
Course type Candidate
Semester start Week 5
Semester end Week 19
Days Thurs 13-17

7.500,00 DKK