The Prince and Princess of Wales attended the official naming ceremony of the warship HMS Glasgow on Thursday.
Kate, 43, who is the ship's sponsor, looked lovely in a navy and white nautical coat from Suzannah London.
During the ceremony, she officially named the Royal Navy warship HMS Glasgow by smashing a bottle of whisky against its hull.
Kate pressed a button triggering an arm holding the single malt which crashed into the grey stealth-like vessel, the first of eight Type 26 anti-submarine frigates to be built in Glasgow.
After the ceremony, the couple boarded the ship and met representatives from BAE Systems, which has led the delivery of the vessel, and others from the Royal Navy who discussed the ship's capabilities.
Their joint outing comes after Prince William showed off his ball skills as he joined a training session with Street Soccer Scotland on Wednesday.
See all of the best photos from William and Kate's day in Glasgow…
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© Andrew Parsons / Kensington PalaceArrival
The Prince and Princess of Wales were greeted by royal naval officers upon their arrival at the shipyard.
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© Andrew Parsons / Kensington PalaceHMS Glasgow
The ship, which is still under construction, is a Type 26 frigate built for the Royal Navy and is a first in class anti-submarine warfare ship. The Princess became sponsor of the ship in 2021.
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© Andrew Parsons / Kensington PalaceScottish titles
The Prince and Princess are known as the Duke and Duchess of Rothesay in Scotland.
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© Andrew Parsons / Kensington PalaceThe naming ceremony
"It's so great to see her, she's fantastic," the Princess said at first sight of the vessel.
Stepping onto the podium, Kate said: "I have the pleasure to name this ship HMS Glasgow, may God bless her and all who sail on her."
Watching the moment were dozens of BAE Systems staff and their families and senior Royal Navy officers who applauded as the whisky bottle broke, an exclusive single malt made by the Clydeside Distillery.
A contribution from each bottle sold will be donated to HMS Glasgow's chosen charity, Place2Be, supporting children's mental health in the Glasgow area, which Kate supports as patron.
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© Alamy Stock PhotoKate's outfit
The Princess teamed her new coat with a pair of suede Gianvito Rossi pumps and a matching hat by Philip Treacy.
She accessorised with Princess Diana's diamond and sapphire earrings, and a silver thistle brooch.
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© GettySpecial brooch
Kate's brooch was specially made by James Porter & Son, established in 1858, who are based in Glasgow's historic Argyll Arcade and are one of Scotland's oldest jewellers.
Simon Porter said they had been asked to design a brooch based on HMS Glasgow's crest.
"It was an absolute honour to see her wearing it," he said.
"Against a plain navy background it really stood out."
The brooch was funded by two London livery companies, the Worshipful Company of Fan Makers and the Worshipful Company of Merchant Taylors.
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© Alamy Stock PhotoOnboard
As William and Kate met apprentices onboard HMS Glasgow, they were tasked with a pipe-building exercise.
Aided by second year pipe apprentices Natalie Black and Rory Hamilton, the couple got to work building their pipes while chatting.
As the Princess swiftly began screwing her pipes together, Ms Black told her: "You look like you’ve done this before," prompting Kate to tell her it was her experience playing with the children's toys.
Prince William, who spent more time chatting than building, later claimed he had not realised it was a race.
Deborah Lynch, an early careers and skills practitioner at BAE, declared the Princess the winner, only for her pipe construction to collapse, prompting much laughter.
