Please note! Course description is confirmed for two academic years, which means that in general, e.g. Learning outcomes, assessment methods and key content stays unchanged. However, via course syllabus, it is possible to specify or change the course execution in each realization of the course, such as how the contact sessions are organized, assessment methods weighted or materials used.


The aim is to introduce the student to winter navigation system in the Baltic Sea and basic principles for ship power requirements and hull ice-strengthening. After the course, students understand the definition of various ice conditions and their effects on the ship design, hull shape, power requirements, navigation in ice and safety of ships. Power requirements needs a comprehensive knowledge of the various methods to calculate the ship resistance in varying ice conditions such as level ice, ridged ice and ice channels. For the hull design, most important is to know how to calculate the ice induced loads on the hull.

Credits: 5

Schedule: 13.01.2021 - 24.02.2021

Teacher in charge (valid 01.08.2020-31.07.2022): Pentti Kujala, Pentti Kujala

Teacher in charge (applies in this implementation): Pentti Kujala, Pentti Kujala

Contact information for the course (valid 21.12.2020-21.12.2112):

Responsible Teacher: Prof Pentti Kujala (

Assistant: M.Sc. Tuomas Romu (

CEFR level (applies in this implementation):

Language of instruction and studies (valid 01.08.2020-31.07.2022):

Teaching language: English

Languages of study attainment: English


  • Valid 01.08.2020-31.07.2022:

    Winter navigation system in the Baltic Sea, definition ice conditions, ice mechanical properties, ship resistance in various ice conditions, propulsion in ice, power requirements, ice induced loads on ships, ice strengthening principles for ship hull. Excursion to an icebreaker operating in the northern Baltic Sea.

  • Applies in this implementation:


     Wed, 13
    Jan, 2021, at 09-12: Opening (Pentti) and activities in Polar ship design and
    operations (Tuomas)

     Wed 20 Jan,
    2021, at 09-12:  Ship operations in ice

     Wed 27th
    Jan, 2021, at 09-12: Ship operations in ice (2)

     Wed 03th
    Feb, 2021, at 09-12: Ship ice-strengthening principles

     Wed 10th
    Feb, 2021, at 09-12: Polar Code, Summary of current research activities in Aalto

     Wed 17th
    Feb, at 09-12: Icebreaker design principles (Tuomas Romu)



Assessment Methods and Criteria
  • Valid 01.08.2020-31.07.2022:

    The assessment will consist of weekly exercises, and the exam. Weekly exercises are related to the topics presented in the lectures and they will give the students skills to conduct the important ship design related tasks. In addtion, iB excursion is possible, but most prpobably only part of the students will get allowannce and the criteria will be the success of the course progress

  • Applies in this implementation:

    •The extent of the course is 5 credit ( in
    total about 125 hours work) consisting of 18 hours lectures, 3 exercises in
    total workload of 48 hours, excursion to ship simulator, and the rest
    is getting familiar with the lecture notes preparing for examine.

    •Own ship can be used in the exercises

    •The course can be passed by examine and
    by conducting at least 50 % of the exercises. Well done exercises can give 6
    extra points in
    the examine

  • Valid 01.08.2020-31.07.2022:

    On the final grade exam 100% contribution, in addition there is a minimum amount of weekly exercises (50%) the students have to conduct to get the permission for the exam and when all exam done properly, max 6 points added to the eaxm points

    Lectures: 3 h/week, 54 hours in total

    Exercises: 1 h/week, 48 hours in total

    Preparing for the exam: 24 hours


Study Material
  • Valid 01.08.2020-31.07.2022:

    Lecture notes in English, A. B. Cammaert, D. B. Muggeridge. Ice interaction with offshore structures. In Finnish: Talvimerenkulku opetusmoniste

  • Valid 01.08.2020-31.07.2022:

    PNA recommended

Registration for Courses
  • Valid 01.08.2020-31.07.2022:


  • Applies in this implementation:

    Because of Corona, the IB excursion will most probably not be organised

SDG: Sustainable Development Goals

    9 Industry, Innovation and Infrastructure

    13 Climate Action