The sea captain's hat is a peaked cover of a U.S. Navy officer of Ensign (O-1) to Lieutenant-Commander (O-4) rating. The cover features a white upper, black visor, a black band, gold chin strap, and the US Navy shield cap device.
|Southwest of Cambridge Police Station||1||In a boat sunken in the river. The area is littered with radioactive barrels and mirelurk hatchlings.|
|Coast Guard Pier||1||Atop the roof|
|Faneuil Hall||1||In the display case near the door on the second floor in the room with lots of paintings and display cases.|
|Harbormaster hotel||1||1st floor: Room 61.|
|Longneck Lukowski's Cannery||1||In an open display case in the lobby.|
|Western Bell vessel||1||In a sunken ship, follow the Nautical radio signal which can be activated at radio tower 3SM-U81.|
|Sandy Coves Convalescent Home||1||Found in one of the rooms.|
|Warwick homestead||1||In the northern end between the concrete reservoirs in a funny arrangement on the head of a teddy bear riding a Giddyup Buttercup.|
|South of University Point||1||Directly south of the Sedgwick Hall building and directly east to where Billy Peabody is first encountered is a skeleton wearing the hat sitting in a bathtub near the water. Approaching the ship will spawn two mirelurk hunters (one which may be legendary).|
|Vault 88||1||Going up a dead-end staircase and looking right. There's a statue wearing it and holding a X-cell.|
|South-West of the USS Constitution||1||Going south-west along the road from the USS Constitution there's a big anchor on display on the road next to a large stone sign. The hat is casually laying on top of said sign.|
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