Replicated Ship is an open source project by Replicated designed to extend Google’s Kustomize project in a way that can reduce the operational overhead of maintaining 3rd party applications (open source or proprietary) deployed to a Kubernetes cluster. The initial release of Replicated Ship exposes the power of Kustomize as an advanced custom configuration management tool for Helm charts, Kubernetes manifests and Knative applications. With Ship, cluster operators can automatically stay in sync with upstream changes (ie. via automated pull requests or another form of automation) while preserving their local, custom configurations and extensions (add, deletes and edits) without git merge conflicts. This is possible because of how the three operating modes of Ship invoke, store and apply Kustomizations made by the cluster operator.