Manannan will be the largest vessel of her type in the Irish Sea with a faster cruising speed than other ferries.

BBC: New Steam Packet vessel unveiled

The largest cargo vessel ever to moor at the Port of Tyne has arrived in the river - bringing "coals to Newcastle".

BBC: Largest ship in Port of Tyne brings coals to Newcastle

She was not the largest passenger vessel that had ever been built, and reporters at the time were not convinced she would be even the fastest.

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With the cryostat path adopted, engineers then set about constructing the largest possible helium vessel they could fit inside an Ariane launch rocket.

BBC: Herschel space telescope finishes mission

The vessel, the largest luxury ship in its time, struck an iceberg on its maiden voyage from Southampton to New York.

BBC: Australian billionaire Clive Palmer to build Titanic II

Upon its debut, Abramovich's vessel became the largest privately owned yacht in the world, surpassing Sheikh Mohammed bin Rashid Al Maktoum's Dubai.

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The Dockwise Vanguard, previously referred to as the Type-O design, is the largest and most advanced heavy lift vessel ever built.

FORBES: Will the Vanguard Semi-Submersible Ultra Heavy Lift Ship Keep Dockwise Afloat?

Whereas the latter is a state owned vessel, however (it belongs to Sheikh Mohammed bin Rashid al-Maktoum, the Crown Prince of Dubai), the Al Salamah is in private hands, and although she is smaller -- a mere 140 meters (457ft) long and 23.5 meters (77ft) wide -- she remains the largest, and most luxuriously appointed non-state vessel currently cruising the high seas.

CNN: Al Salamah: The ultimate yacht

The vessel, named after the ill-fated explorer Captain Scott, is the fifth largest in the Royal Navy's fleet.

BBC: Antarctic survey vessel HMS Scott returns to Devonport