Hopes are fading in the search for the missing Coodanup fishermen, with authorities drastically scaling back their search.
The tragic incident has already claimed two lives and cast a bleak shadow over hopes to find the remaining two men.
On Monday, one Water Police boat and fixed-wing aircraft were deployed to continue the search on the western side of Garden Island.
The men set out for the doomed fishing trip to Rottnest Island from Woodman Point on Wednesday.
At 9pm on Thursday, a family member raised the alarm that the four men were missing.
Since then, a wide-scale marine search has been undertaken off Perth’s coastline, tragically uncovering the bodies of two men.
The two bodies found in the water are believed to be those of Jacob Pham, 24, and Justin O'Neill, 32.
The boat’s owner Uock Pham, 50, and his brother Tuan Pham, aged in his 40's, are still missing.
A GoFundMe page has been set up for their loved ones, left behind by the tragedy.
Since it was created on October 6, more than $25,000 has been raised and hundreds of condolences have poured in for the affected families.
On Monday, a relative of the family posted her thanks to those who had already donated.
“Your support is a huge help to our family in this time of acute pain. We have no more news but we're still holding out hope to find Uock and Tuan, regardless that the search has been scaled back today. Nothing will ease the emotional stress of this situation, however, the aid that we are receiving through this page is a providing a necessary support for upcoming financial burdens,” she wrote.
To donate visit the GoFundMe website.
Water Police want to hear from anyone who may have been boating at Rottnest Island on Thursday.
#UPDATE— Fremantle Sea Rescue (@FreoSeaRescue) October 5, 2018
R100 and our Rescue Jet Skis Rapid 1 + Rapid 2 have joined the search.
Whitfords Volunteer Sea Rescue, Mandurah Volunteer Marine Rescue and Rockingham Volunteer Sea Rescue are also on scene @dfes_wa#perthnews#wanewspic.twitter.com/mpeQ1QedQ3