Swirly World In Perpetuity

Swirly World In Perpetuity is a small sailboat which has been used by Andrew Fagan to make a series of solo voyages.

The yacht was designed by Gary Appleby, a New Zealand apprentice boatbuilder, and was constructed by Michael Brien, who launched it in 1972. According to Fagan, Brien was "an all-rounder and used to be a cabinetmaker and [he] had made an immaculate job of [building] the boat."

The yacht's hull has a chine construction, made of plywood sheathed in Dynel. Measurements taken during a 2019 refit showed that it measured 5.21 m from stemhead to transom, with a 1.74 m beam and a 1.2 m draft. It is a sloop with a masthead rig, with the mast itself being 7.2 m tall. The yacht was originally equipped with a 5.15 kW Honda inboard motor, this has since been replaced with a 4.8 kW Lifan petrol engine, fitted with a centrifugal clutch.

Fagan purchased the vessel in 1985 and used it to make a series of solo long-distance voyages. These included sailing from Auckland to Raoul Island and back; Auckland to Wellington via the west coast of the North Island, and a double crossing of the Tasman Sea as part of the 1994 Solo Trans-Tasman Race. These voyages were written about in Fagan's book Swirly World: The Solo Voyages, published in 2003.

In 2007, Fagan completed a 3,000 m circumnavigation of New Zealand with the yacht, with the route taking in the subantarctic Auckland Islands. This voyage is detailed in Fagan's 2012 book Swirly World Sails South.