Digitalisation is still in its infancy in ports. I2PANEMA aims to deploy the power of IoT to improve port operations, making them more efficient and sustainable, paving the way towards networks of smart ports. Barriers like data security and the lack of integration of existing, heterogeneous IT systems are to be overcome. The requirements of the pilots are important stimuli for developing an IoT port reference architecture. The architectural findings are planned to be contributed to standardisation bodies such as Industry 4.0 RAMI.