Lloyd’s Register release guidance notes for digital 3D models

This summer, classification society Lloyd’s Register released guidance notes to give shipyards and designers a “practical route” to use intelligent 3D models during the class approval process. Lloyd’s Register, which provides classification on nearly half the world’s superyacht fleet, believes this is a first for the maritime industry, “marking a significant step” towards digital first ship design and review. 

In 2023, Lloyd’s Register noted that 3D digital models were replacing traditional paper drawings in design and construction, though a variety of software types and platforms created challenges. 

“For many projects, the most complete representation of a vessel now exists in a digital model,” said João Estevens, Senior Specialist, Lloyd’s Register. “By defining what information should be included, how it should be structured and how it can be reviewed, we are giving clients greater clarity on how to use those digital assets to support class approval and maximise the value of the work they are already doing.”

In 2023, Lloyd’s Register announced that it would work with shipyards and software firms to develop an Open Class 3D Model Exchange format as a conversion platform. 

The new guidance shows how 3D models can support the structural plan approval process and defines the characteristics such models should possess. It covers file formats, model organisation, metadata requirements, levels of structural detail, revision control and submission requirements, providing a consistent framework for both designers and class reviewers. Rather than creating additional digital assets for class review, the framework should “reduce duplication and improve consistency between design, production and approval activities."

Models submitted under the framework can also be reviewed and managed through LR's Digital Workbench platform. Major superyacht builders such as Oceanco, Lurssen, and Heesen have adopted 3D digital modeling tools.