There is no cache at the posted Coordinates

In order to obtain the actual coordinates you will need to visit the 5 locations of the Ulladulla Harbour Adventure Lab (which can be found here), answer the questions correctly and make notes from each question as instructed there. You will then have 5 clues: four are a single letter, convert these to numbers using the traditional A=1, B=2, Z=26 formula. There also one single-digit numeric answer.

You may want to print this page before setting off so you can record the answers here.

Stage 1 - Time Walk. The 1st letter of the name
S1=

Stage 2 - Millard's Creek Bridge. The third digit of the answer
S2=

Stage 3 - Gateway Sculpture. The 4th letter of the answer
S3=

Stage 4 - Game Fishing Club. The 2nd letter of the second word
S4=

Stage 5 - Sea Pool. The 1st letter of the answer
S5 =

The cache can be found at S 35° 21.ABC' E 150° 28.DEF' where

A=S1-S5

B=S4+S5

C=(S1-S2)-S4

D=S2

E=S3+S5

F=S4

You will then be looking for a small Systema container covered by some natural camouflage. Please cover with natural camo so it is not visible to passers-by.

Since Groundspeak doesn't provide coordinates for Lab Cache stages I have included them as virtual waypoints here.  I have also added the two main parking coordinates. If you park at the Rotary Park carpark, there are BBQ's, toilets, drinking water and a great kiddie's playground.