Lachlan and Sarah Murdoch watch the sunset on their new $30million yacht as they cruise around Sydney Harbour with family and friends

Lachlan Murdoch and his wife Sarah enjoyed a relaxing afternoon on their $30million superyacht, Istros, on Wednesday.

The couple, who have been married for 23 years, watched the sunset on the vessel as they cruised around Sydney Harbour with family and friends.

Sarah, 49, kept warm in a blue jumper and white puffer jacket as she chatted to pals after boarding the yacht.

Setting sail: on Wednesday

Setting sail: Lachlan and Sarah Murdoch watched the sunset on their new $30million yacht in Sydney on Wednesday

Out and about: The couple, who have been married for 23 years, cruised around Sydney Harbour with family and friends

Out and about: The couple, who have been married for 23 years, cruised around Sydney Harbour with family and friends

Lachlan, 50, wore dark pants, a white shirt and black jacket.

The Murdochs sat on the deck and chatted to their guests while watching the sunset in the distance.

Lachlan and Sarah are parents to sons Kalan Alexander, 17, and Aidan Patrick, 16, and daughter Aerin Elisabeth, 12.

Casual: Sarah, 49, kept warm in a blue jumper and white puffer jacket as she chatted to pals after boarding the yacht

Casual: Sarah, 49, kept warm in a blue jumper and white puffer jacket as she chatted to pals after boarding the yacht

Keeping it casual: Lachlan, 50, wore dark pants, a white shirt and a black jacket

Keeping it casual: Lachlan, 50, wore dark pants, a white shirt and a black jacket

Catch-up: The Murdochs sat on the deck and chatted to their guests while watching the sunset

Catch-up: The Murdochs sat on the deck and chatted to their guests while watching the sunset

In April last year, the Sydney Morning Herald reported the Murdochs could be staying in Australia 'for years, not months, as initially believed'.

The couple, who own a home in Bellevue Hill, known as Le Manoir, married in 1999.

Lachlan purchased the superyacht Istros earlier this year.

The vessel is likely to be moored where the family recently purchased a $38million 'boat shed' at Wunulla Road, Point Piper.

Moving? In April last year, the Sydney Morning Herald reported the Murdochs could be staying in Australia 'for years, not months, as initially believed'

Moving? In April last year, the Sydney Morning Herald reported the Murdochs could be staying in Australia 'for years, not months, as initially believed'

New purchase: Lachlan purchased the superyacht Istros earlier this year

New purchase: Lachlan purchased the superyacht Istros earlier this year

Safe place: The vessel is likely to be moored where the family recently purchased a $38million 'boat shed' at Wunulla Road, Point Piper

Safe place: The vessel is likely to be moored where the family recently purchased a $38million 'boat shed' at Wunulla Road, Point Piper

The 42-metre Istros, which was built in 1954 and subsequently refurbished, was once owned by the Pappadakis shipping dynasty.

It won the grand prize for the best restored vessel at the Monaco Yacht Club Prada Classic Yacht Show in 2001.

But it fell into disrepair and was little more than a rusting hulk when it was rescued from a Maltese port in 2015, salvaged and rebuilt.

The interiors were redesigned in chic Scandinavian style by Van Geest Design.

History: The 42-metre Istros, which was built in 1954 and subsequently refurbished, was once owned by the Pappadakis shipping dynasty

History: The 42-metre Istros, which was built in 1954 and subsequently refurbished, was once owned by the Pappadakis shipping dynasty

Award: It won the grand prize for the best restored vessel at the Monaco Yacht Club Prada Classic Yacht Show in 2001

Award: It won the grand prize for the best restored vessel at the Monaco Yacht Club Prada Classic Yacht Show in 2001

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