The families of three of the four men killed after a car crash near Newport have paid tributes.
Geraint Hill, 26, was found dead along with Scott Harding, 25, his brother Warren, 27, and Andrew Brooks, 30, who were all from Risca.
Their bodies were found on Sunday in an overturned car, partly submerged in water, eight miles away at St Brides.
Police renewed their appeal for witnesses, to what they called a "tragic accident".
Brothers Scott and Warren Harding leave a daughter and two young sons respectively.
Their family statement said: "Scott and Warren were a much-loved husband, husband-to-be and loving fathers to their children.
Geraint Hill died along with three of his friends
"They were adored by their parents and extended families, friends and work colleagues".
The family said Scott enjoyed going to the gym and Warren had recently started playing football with work colleagues.
"As brothers, they were very close and they and their families spend a great deal of time together. Their loss will leave a void that can never be filled".
Mr Hill's family released a statement saying: "Geraint was an all round sportsman who enjoyed watching as well as taking part," said the family.
"He was very much loved by all his family and friends and will be sorely missed by his parents and younger sister.
"He leaves a void that will never be filled."
It is believed the men had planned to spend Saturday evening fishing together and had been travelling in the direction of Cardiff.
Andrew Brooks leaves a young family
Police were called at 0715 BST on Sunday when passers-by spotted the Toyota car on its roof in a ditch on the B4239 coast road.
It is believed the men's car entered the water some time after 2030 BST on Saturday.
The men may have been trapped inside the car and unable to get out before the car filled with water.
Chief Inspector John Pavett said: "We are unsure how long the car had been in the water. We do need more information to put together a fuller picture of the movements of the vehicle to understand why it left the road when it did."
An inquest will be opened later this week.
Gwent Police have appealed for witnesses to contact them on 01633 838111 or to ring the Collision Investigation Unit on 01633 643091.