Most probably not. The Jetty at Tolaga Bay is reported as 600m long, and I doubt that the one at Jackson Bay is one-third of that length. I cannot find definitive information.
Jackson Bay & Jackson Head
Jackson Bay is located on New Zealand's western coast. It is near Mount Aspiring National Park.
Jackson Bay on the West side of South Island.
Haast is a township on the South Island, New Zealand. The nearest bay is Jackson Bay.
This bay in New Zealand's North Island is called Hawkes Bay.
Below the jetty
TAUMATAWHAKATANGIHANGAKOAUAUOTAMATEATURIPUKAKAPIKIMAUNGAHORONUKUPOKAIWHENUAKITANATAHU.This is the Maori name for a hill in the Hawkes Bay of New Zealand, it is also the longest word in the Guiness Book of World Records.
Pukerua Bay, west of Wellinton
The hill that is known as Taumata_whakatangihanga_koauau_o_tamatea_turi_pukakapiki_maunga_horo_nuku_pokai_whenua_kitanatahu is located south of Waipukurau in Hawke's Bay, New Zealand. It holds the record for the longest place name in the world.
bay of plenty
That depends on how you define bay. Probably the Bay of Bengal.
If Jervis Bay is part of New Zealand it basically means that it should be under their jurisdiction.