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GreenTech 2023 will take place from Monday, June 12 to Wednesday, June 14 at the Grand Hyatt Seattle Hotel.

Why register?

GreenTech is the annual not-to-be-missed event! The conference always features knowledgeable speakers, enriching content, networking activities, and an exhibition hall showcasing the latest technologies in sustainable maritime transportation.

Access to all of the sessions

Various topics and renowned speakers to relate actual experience, case studies, innovative research, new technologies, judicious partnerships… See the 2023 program.

Visit the exhibition booths

The exhibition is the place to learn about products and services designed specifically to improve the maritime industry’s environmental performance, directly from the knowledgeable representatives.

Two breakfasts, two lunches, a welcome cocktail, coffee breaks

And that’s not counting the Barista Bar!


Certification reception

A special moment to recognize Green Marine’s certified participants and network in the unique Museum of Pop Culture's setting.


The chance to go on industrial site visits*

*Limited capacity – Reservations on a first-come, first-served basis. 


Early bird* Regular rate
Green Marine member $700 $800
Other than member $800 $900
Students and Environmental group representatives $300 $350

*These early-bird rates are valid until April 15, 2023.

Site visits

Port of Seattle **sold out

Duwamish River People’s Park

Enjoy views of the Duwamish River and its shoreline marsh habitat from an elevated river walkway, and explore a walking path with a hand-carried boat launch! The Port of Seattle officially opened the park (formerly Terminal 117), the largest habitat restoration site along the Duwamish River in a generation, last July. Duwamish River People's Park is an ongoing story of the Duwamish Valley community and the Port of Seattle’s long journey from cleanup of an old Superfund site to a 14-acre public park and shoreline habitat along the Duwamish River. Learn more about the restoration process during this unique tour.
SCHEDULE: Departure from the hotel 1:30 pm, Return at 4 pm.

Washington Maritime Blue **SOLD OUT

Blue Hub and Startup Ventures

Washington Maritime Blue (WMB) is committed to developing maritime business, technology, and practices that promote a sustainable future contributing to economic growth, ecological health, and thriving communities. Delegates will join the Blue leadership team at the Fishermen’s Terminal and meet with start-up founders who have taken part in the Blue Ventures Accelerator and Incubator programs. They received access to WMB industry and ocean leaders alongside the Cluster’s global network of mentors and advisors. Come network and hear some quick pitches on the latest in Maritime and Ocean Innovation. Bonus: Green Marine Seattle’s office is also in the Blue Hub! 
SCHEDULE: Departure from the hotel 1:30 pm, Return 4 pm.

Washington State Ferries **sold out

All aboard access!

The Seattle–Bremerton ferry is a route across Puget Sound. On top of enjoying the scenic tour of the Puget Sound natural resources, guests will get private tours of the pilothouse and the engine room. These guided tours will be performed in small groups of 4-5 people during the crossings to allow everyone access. Delegates will also have the opportunity to take pictures on the exterior deck on the main passenger level. The route from Seattle departs from the Washington State Ferry Terminal on the central Seattle waterfront. Washington State Ferries has been a Green Marine participant since 2018 and certifies its vessels, terminals and shipyard activities within the program.
SCHEDULE: Departure from the hotel 2:15 pm, Return 5:45 pm.

Port of Seattle (max 325 ppl)

Harbor tour

The best way to end a maritime event is on the water! On Wednesday afternoon, board one of Argosy Cruises' vessels and take in all the beauty and history of the Emerald City, from the skyline to the shipping port. Enjoy narration from port experts with facts and history of the Port of Seattle’s past and present activities and facilities. This cruise tour offers panoramic and up-close views of the Seattle skyline and shipping port and sweeping views of the Olympic Mountains and Puget Sound. The vessel is equipped with a full-service bar on board with cocktails, local wine and beer available for purchase.
SCHEDULE: Departure from the hotel at 3:45 pm, Return at the dock at 6 pm. No transport is planned for the return once at the dock.

T-Mobile Park **sold out

Take me out to the ball game!

Join the Green Marine team for an MLB baseball outing at the Seattle Mariners. The $50 USD package includes a Green Marine cap! The game opposes the Seattle Mariners and the Miami Marlins. Tickets are located in the infield section 124 seat (ticket value of USD 80). Everyone is responsible for their transportation to get to T-Mobile Park.

SCHEDULE: Wednesday, June 14, 2023, 6:40 pm. No shuttle service.

Take part in GreenTech