News

Announcement

03.03.2026

We are proud and happy to announce that Andre Martin Nielsen has joined Sealytix as our new Chief Product Officer.

André will work with Claus Vesterdal and our development teams to ensure that our customers get products with maximum business value and ease of use. He will also manage key accounts and oversee onboarding and customization activities.

André is an internationally leading expert in stowage software products. His career journey has provided him with comprehensive insights into the industry's lifecycle — from the fundamental execution of Bills of Lading to the complex stowage coordination of 19,000 TEU container vessels.

He started at COSCO SHIPPING (formerly China Shipping) in 2007 as a Ship Manager and Stowage Coordinator. He successfully executed the Hamburg port debut of the world’s largest and longest (400m) container vessel. He also led capacity expansions and drove operational efficiency through various IT initiatives, gaining deep strategic insights into head-office operations.

Our team at Sealytix then had the pleasure of working with him from 2014 to 2019, where he was hired at Navis. Here, he transitioned into software development and product management, focusing on stowage optimization solutions. In close collaboration with our optimization team, he delivered tools that empowered users to maximize vessel intake and improve overall stowage visibility.

In 2019, André moved to HPC Hamburg Port Consulting GmbH to bridge the gap between carrier operations and terminal logistics. During his seven-year tenure, he gained extensive experience with both "greenfield" and "brownfield" terminal projects. Since 2024, Sealytix again enjoyed working with him as an excellent facilitator of the development of a special version of our SLX | STOW product for HVCC Hamburg Vessel Coordination Center GmbH.

We warmly welcome André to Sealytix. We are busy moving forward and André fits right in.

Successful PHD Defense

24.06.2025

Big congratulations to Agnieszka Sivertsen for successfully defending her industrial PhD with Sealytix at Roskilde University. 

Not surprisingly, Aga has studied the containership stowage planning problem. This problem sits at the heart of utilizing the capacity of containerships. Bad planning can easily lead to a loss of more than 15% of executable capacity, hurting the bottom line of carriers and causing unnecessary CO2 emissions. It is hard to believe that this is an area with fewer than 200 scientific publications since container shipping was introduced more than 60 years ago.

Aga has gone to great lengths to change this state of affairs. One big challenge for the research community is the lack of data. To that end, Aga has published the largest benchmark suite to date based on real cargo and vessel data. Another hurdle is the complexity of the problem. Scientists cannot use decades of their career just to understand the major combinatorial aspects of an optimization problem. To address this, Aga, together with experts from Sealytix, has formulated a so-called representative container stowage planning problem (RCSPP). This formulation avoids unnecessary details and defines the main aspects in the simplest way possible. The RCSPP is representative in the sense that an algorithm solving it well can also be assumed to be efficient on the real problem.

These are great contributions to the research community, but Aga went beyond and published a new large neighborhood search algorithm to solve the RCSPP, including some innovative ideas on applying machine learning to guide the search. The latter has evolved into a research project in itself and is now pursued at IT-Universitetet i København by Jaike van Twiller with support from the Den Danske Maritime Fond.

Thank you, Line Reinhardt, for supervising Aga, and thank you, Innovation Fund Denmark, for supporting this PhD project financially.