Saimin isn't ramen and it isn't wonton mein — it grew up on plantation camps where Japanese, Chinese, and Filipino workers pooled what they had into one bowl. The broth is light and clean: dashi with a shrimp backbone, barely salted, made for slurping at drive-ins and after football games.
Fresh saimin noodles are ideal if your market carries them; otherwise fresh ramen noodles are the closest cousin.