There are several synonyms for the phrase "from on board," all indicating that something is being communicated or observed from a vehicle or vessel. Some alternative expressions could include "from the deck," which suggests a naval context; "from the cockpit," used in aircraft or aviation scenarios; or "from the cabin," which may apply to either sea or air travel. Additionally, the phrase "from the helm" might be used to indicate that the speaker is providing insight or guidance from a position of control, perhaps in a sailing or boating context. Overall, synonyms for "from on board" all imply that the speaker is offering information from the perspective of a traveler, pilot, or driver.