What is the angle of heel in ships

What is the angle of heel in ships

The angle of heel in ships refers to the inclination of a vessel to one side or the other, measured as the angle between the waterline and the deck[1][2]. It is caused by external forces such as wind, waves, or uneven loading of the vessel[5]. The angle of heel can have various effects on the stability and safety of the ship, depending on its magnitude and the vessel's design[2].

- The angle of heel due to the combined effect of crowding, wind pressure, and centrifugal force should not exceed 12° in calculations[1].

- Fast displacement ships with Fn > 0.25 may feature dangerously large heel angles in turning circles, with the heel always outwards, i.e., away from the center of the turn[2].

- The stability of a ship is significantly reduced due to the build-up of ice on its superstructure, causing unwanted angles of list and trim conditions[5].

To measure the angle of heel, a device that can sense the change in the ship's orientation relative to the vertical is used[6]. Monitoring and controlling the angle of heel is crucial for the safety and stability of the vessel, and appropriate actions should be taken to maintain it within safe limits.

Citations:

[1] Heel Angle - an overview | ScienceDirect Topics https://www.sciencedirect.com/topics/engineering/heel-angle

[2] Heeling Angle - an overview | ScienceDirect Topics https://www.sciencedirect.com/topics/engineering/heeling-angle

[3] Heel & Angle of Heel https://sailskills.co.uk/Stability/sailskills_stability_stability_explained_heel_&_angle_of_heel.html

[4] What is Angle Of Loll in Ships? - Marine Insight https://www.marineinsight.com/naval-architecture/angle-of-loll/

[5] Ship Stability - What Makes a Ship Unstable? - Marine Insight https://www.marineinsight.com/naval-architecture/ship-stability-makes-ship-unstable/

[6] How to Measure Heel Angle and Shift of Weights in an Inclining Experiment - LinkedIn https://www.linkedin.com/advice/1/what-best-methods-measure-heel-angle-shift-weights

By Perplexity at https://www.perplexity.ai/search/72a3e57d-faf4-4ac7-9039-92d0ddec3e5d?s=m