As well as all boats flying the local flags, Clarkson's replica PBR flies the Cook Islands flag and May's wooden cruiser flies the British Red Ensign (until it broke off).
Clarkson makes several comments about what Britain would be like after Jeremy Corbyn becomes Prime Minister. Ironically, Corbyn lost a general election the day before the episode was released.
Was not hosted in the tent like seasons one, two and three.
First episode where the presenters are using boats rather than cars as the main vehicles.