How a Post Panamax Container Vessel and her Container Lashing Behaves During Heavy Swell

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A swell, also sometimes referred to as ground swell, in the context of an ocean, sea or lake, is a series of mechanical waves that propagate along the interface between water and air under the predominating influence of gravity, and thus are often referred to as surface gravity waves. These surface gravity waves have their origin as wind waves, but are the consequence of dispersion of wind waves from distant weather systems, where wind blows for a duration of time over a fetch of water, and these waves move out from the source area at speeds that are a function of wave period and length. More generally, a swell consists of wind-generated waves that are not greatly affected by the local wind at that time. Swell waves often have a relatively long wavelength, as short wavelength waves carry less energy and dissipate faster, but this varies due to the size, strength, and duration of the weather system responsible for the swell and the size of the water body, and varies from event to event, and from the same event, over time. Occasionally, swells that are longer than 700m occur as a result of the most severe storms.

Swell direction is the direction from which the swell is moving. It is given as a geographical direction, either in degrees, or in points of the compass, such as NNW or SW swell, and like winds, the direction given is generally the direction the swell is coming from. Swells have a narrower range of frequencies and directions than locally generated wind waves, because they have dispersed from their generation area and over time tend to sort by speed of propagation with the faster waves passing a distant point first. Swells take on a more defined shape and direction and are less random than locally generated wind waves. (wikipedia.org)

00:00-01:39 View from the Bridge
01:39-02:38 View from the Forecastle
02:38-03:22 Bulbous Bow
03:22-03:55 Container lashing
03:55-05:23 Sliding hatch covers
05:23-07:03 Sound of scratching metal and bending moments

Vessel in this Video :
M/V MAERSK SURABAYA (IMO: 9330068)
MMSI: 219029762
Call Sign: OZSO2
Gross Tonnage: 94322
Summer DWT: 108350 t
Length Overall x Breadth Extreme: 332.58 x 43.32 m
Year Built: 2006
Home Port: MONROVIA

The video was shot in October 2021 in Great Australian Bight