OceanHackWeek (OHW) is an international initiative that was launched in 2018 with the vision of building an inclusive community that promotes data and software proficiency in oceanography. Since 2021, we have hosted an Australian edition of OHW, online in 2021 and then in-person in 2022 (North Stradbroke Island, QLD) and 2023 (Dunsborough, WA). Computational and data science skills have become indispensable for advancing scientific discovery and facilitating open science initiatives. The last two decades have seen an explosion of oceanographic data from a broad array of ocean observing platforms and dramatic improvements in ocean models to resolve processes across multiple temporal and spatial scales. Ocean researchers' ability to leverage computing skills, tools and resources are key to effectively understanding and monitoring our oceans, the marine ecosystems they support, and the response of the Earth to climate change. With a mission to meet, collaborate, and learn at the intersection of ocean and data sciences, through OHW we create a vibrant, diverse, and inclusive community that embodies the vision of an open ocean science future. This work outlines OHW's model, evolution, curriculum, event formats, and offers lessons learned and recommendations for implementing the OHW approach in future workshops.