The design of a modular floating multi-purpose island inherently involves interaction within a group with a large range of backgrounds such as engineering, architecture, sociology, climate modeling, and more. A heuristic design approach was adopted for future island developers to make a first conceptual design. Four major design considerations were distinguished to discretize the design space: module size, module shape, module principle, and module connection and mooring. For each consideration a set of evaluation criteria were defined. This article describes the heuristic conceptual design procedure that was applied to the design of a modular floating island for offshore energy, offshore accommodation, aquafarming, and offshore transport and logistics. Two reference installation scenarios with a different respective focus of functionality, located in the North Sea and in the Mediterranean Sea, were created as a basis for the design. The first step of the design procedure consisted of a participatory process involving stakeholders and experts to rate design options for each category of design considerations based on the evaluation criteria and with regard to the installation scenario. As a result, all design configurations could be associated with an overall rating. In a second step, the most favorable designs identified during the participatory design procedure were investigated numerically to assess force distribution throughout the island when exposed to wave and current loads. The numerical results indicate that contrary to initial estimates during Phase 1, wave forces on an island consisting of quadrangular modules do not significantly exceed those experienced by triangular base shapes. As quadrangular modules can be shown to provide a higher Ground-Space-Index, this gives them a distinct advantage. As a result of the design process for this application, a barge-like, square structure with a base size of 45 m was chosen as the base module.

模块化浮动多功能岛的设计固有地涉及到在具有广泛背景（例如工程，建筑，社会学，气候建模等）的组内进行交互。对于未来的岛屿开发人员，采用启发式设计方法进行第一个概念设计。区分四个主要设计注意事项以离散化设计空间：模块大小，模块形状，模块原理以及模块连接和系泊。对于每种考虑，都定义了一套评估标准。本文介绍了启发式概念设计过程，该过程已应用于设计用于海上能源，海上住宿，水产养殖以及海上运输和物流的模块化浮岛。两种参考安装方案，其功能重点各不相同，设在北海和地中海的设计作为基础。设计过程的第一步包括一个参与过程，由利益相关者和专家参与，根据评估标准和安装方案对每种设计考虑因素的设计选项进行评分。结果，所有设计配置都可以与总体评级相关联。第二步，对参与式设计程序中确定的最有利的设计进行了数值研究，以评估在波浪和电流载荷作用下整个岛上的力分布。数值结果表明，与第一阶段的初始估计相反 由四角形模块组成的岛上的波浪力不会明显超过三角形基础形状所承受的力。由于四边形模块可以显示出更高的地面空间指数，因此具有明显的优势。作为此应用程序的设计过程的结果，基础尺寸为45 m的驳船状方形结构被选为基础模块。