Billy and Sierra, a traveling YouTuber pair and sailors from Tula’s Endless Summer met via a serendipitous boat rescue, built a life sailing restored vessels, and started documenting their voyages authentically to share with their audience.
Tula’s Endless Summer Net Worth as per the latest findings of our team in 2025 is $1 million. Tula’s Endless Summer, known for their sailing adventures, began their journey after Billy, one of the pair, acquired a neglected 26-foot sailboat, Tula.
Billy had experience as a lifeguard and always wished to pursue sailing, and that’s the reason he considered restoring and upgrading Tula. This passion led to the beginning of travels, documenting adventures on YouTube and other social media platforms. Find the updated information regarding their earnings, lifestyle and other details.
| Real names | Billy Swezey; Sierra Groth |
| Net Worth | $1 million |
| Birthday | Billy Swezey – April 24, 1989; Sierra Groth – 1992 |
| Birthplace | Billy Swezey – the USA; Sierra Groth – the USA |
| Age | Billy Swezey – 36; Sierra Groth – 33 |
| Height | Billy Swezey – 5ft 9in; Sierra Groth – 5ft 5in |
| Weight | Billy Swezey – 80kg; Sierra Groth – 65kg |
| Nationality | American |
| Profession | YouTubers and sailors |
| Website | tulasendlesssummer.com |
Table of Contents
Detailed information Regarding Earnings and Income Sources
The pair’s monthly earnings, as per our findings, are around $15K to $20K. Yearly earnings are around $180K to $240K.
The sailing YouTube stars earn from varied sources as follows:
| Income Generation Stream | Estimated Earnings |
| YouTube (Tula’s Endless Summer) | $7K – $10K per month |
| TikTok | $500 – $2K per month |
| Instagram (tulasendlesssummer and tulasendlesssummer_sierra) | $500 – $1.5K per sponsored post |
| Brand Endorsements, Product Sales (The Tula Shop – Tula Products and Recommended Gear), Affiliate Commissions (including Amazon Associates), Collaborations and Sponsorships | $1K – $3K per month |
| Streaming platforms – spotify.com | $300 – $700 per month |
| Patreon subscriptions | $500 – $700 per month |
| Paypal donations | $200 – $500 per month |
Assets: Boats, Houses and Vehicles
Billy Swezey and Sierra Groth own several trawlers & catamarans. They’re sailing aboard Hull #1 of the Seawind 1170, a 38–39 foot compact ocean‑going catamaran.
Among the others, one is S/V Adrenaline 1, while the other is an M/V Mountain Myst, a 1978 DeFever trawler.
Previously, they lived aboard and upgraded Tula (1977 Victoria Frances 26′ starter sailboat) and Neverland (1974 Marine Trader trawler), both of which they restored and sold for profit.
Previously owned vessels include Adrenaline, a 1988 Crowther Spindrift 40′ catamaran, and Mountain Myst, a 1978 43′ DeFever trawler. Fully upgraded Adrenaline is listed for $89,000. Also, they had mentioned back in an older story about having purchased “Adrenaline” for $45,000 before doing their own refit.
Billy Swezey and Sierra Groth used to tow their Highfield RIB along the U.S. East Coast during periods when boats are on land or during overland travel.
The duo has owned houses in the U.S., which were used to support their boating journey.
They keep investing a minimum of $5K a year in solar panels, navigation electronics (B&G), EPIRBs, MOB gear, and other marine-standard equipment.
Family, Crew and Relationship Status
Billy is a Founder, captain, and boat restorer who hails from East Islip, NY, while Sierra is a marine biologist and, paddling and diving enthusiast. She met Billy when “Tula” broke down in her hometown.
Jetty is their Australian Cattle Dog.
Sierra’s mom and dad are supportive and curious regarding their adventures. Billy’s father helps with gear sourcing. Siblings include Sydney, Chris, with Chris even sporting their merch during surf events.
Conclusion
Billy and Sierra have been presenting to the masses their passion for the sea while being quite enthusiastic about the sailing lifestyle. The pair had started with a small sailboat, Tula, and later became known for several vessels, including trawlers and a catamaran. The pair keeps sharing with the audience engaging DIY repairs, soulful cruising.
