Mark Zuckerberg's $100 million (£80 million) support vessel Wingman docked at Seattle's Smith Cove Cruise Terminal on 27 May, pulling into a berth normally reserved for cruise ships and sitting just minutes from his $300 million (£240 million) superyacht Launchpad.
Together, the Meta chief executive's maritime holdings total an estimated $400 million (£320 million). But the purchase price is only the beginning of what it costs to keep a fleet of this scale on the water.
