Great Southern Sea

Structural Design of Pelagic 77 sailing yacht

It is expected that at the end of this year Salt will have the pleasure to see the final result of one of the most rewarding projects that our team ever did. We are talking, of course, about the completion of the Pelagic 77 expedition sailing yacht.

In 2017, Salt was approached to develop the structural design of the new pelagic 77, an aluminium yacht designed for expedition sailing, mainly in high latitudes. Salt’s work implied the conduction of a series of analysis to find out the grade of materials, the cross-sectional dimension, and the amount of reinforcement necessary for the yacht structure to withstand the adverse environmental conditions of the polar seas.



Pelagic 77 is required to perform and remain safe in some of the harshest cruising conditions on earth, and this is something for which no comprehensive guidance exists. It also needs to be comfortable, practical to operate, aesthetically pleasing, cost-efficient to build, and meet many other, often conflicting, requirements.

To guarantee that the Pelagic 77 would stand out as a vessel capable of any expedition Salt’s team designed a structure able to stand any adversity. Having experienced sailors as part of our team turned this process much easier since they were able to describe in detail how storms and common accidents could affect the ship. With these insights, our architects and engineers quickly identified all the potential threats to the structure and worked on how to prepare it to overcome them.

1. The reinforced aluminium hull and deck structures are strong enough to tackle a passage through the ice without any damage.

2. The schooner sail plan allows the craft to easily adjust when facing rough seas and high winds.

3. The robust fixed keel with a solid aluminium machined centreboard allows for a safe navigation in shoal waters.

During the development of the structural design Salt’s team had the privilege of working with highly qualified professionals of their fields which included the interior designer, engineers, and shipyards. The international dimension of the project as well as the constant sharing of different perspectives, ideas and enthusiasm were key factors to enrich the project.

In the end, this project was a steep learning curve for Salt’s team: We are accustomed to the offshore energy industry, where all structural engineering follows exhaustively detailed codes of practice. On this occasion however, the work pretty much started where applicable codes ended.

We are very proud to be a part of this project and would like to personally thank all intervenients for all the knowledge they have shared throughout the process.
We will wait with a lot of enthusiasm for the completion of the Pelagic 77 and to hear about all its expeditions in the far corners of the earth.