#

Characteristics - speed


22 May 2019 | Last update: 23 Dec 2020

What makes Gemini fast? Primarily, 4 features.

1. The top speed of a sailboat is limited by friction with the water, so designers try to minimise the wetted surface area of the hull. In modern boats, they do that by making the hull broad but shallow. With Gemini, the design is for a narrow but relatively deep hull.

2. The narrow hull means Gemini leans over rather easily, compared to the stiffer behaviour of modern broad-hulled boats. To counteract that effect, Gemini has a heavy keel – 5 ½ tonnes of lead! This means that although she starts to lean over rather easily, she rapidly resists leaning over too far. Ultimately, this means she can carry more sail in stronger winds without leaning over excessively. This makes her fast in heavy weather – she can keep pushing hard through a gale.

3. A very tall rig, which means she can carry large sails. Gemini’s mast is as tall as modern boats of the same size. Gemini still has her original wooden mast. Contrary to what one might assume, wooden masts are pretty much as strong as aluminium masts. But they are much heavier. That extra weight up high is undesirable, so wooden masts are actually hollow. The mast is built in sections. They take a log, cut it lengthways down the middle, reverse the two halves and glue them back together, back to back, after hollowing out the middle. This construction method means that if the original log had any tendency to warp as it dries out, it is now trying to warp in opposite directions at the same time. So the construction holds the mast straight. Clever guys these shipwrights!

4. Finally, Gemini has a very distinctive canoe-shaped stern. This feature gives the hull an exceptionally streamlined shape, and is easily worth ¼ of a knot or so – a big speed boost. It’s also very seaworthy – it gives a very strong hull construction, and it cuts through the waves when they come from behind. But it is a very uncompromising design choice. Essentially it means you lose a whole cabin from the layout below. Gemini is a 41 foot boat on deck, but down below, she has about the same space as a modern 32 foot boat.

Read on to find out how the design brief was fulfilled:

What our customers say

Over 250 ★★★★★ reviews

TripAdvisor Certificate of Excellence & Hall of Fame 2015, 2016, 2017, 2018, 2019

A Mediterranean Adventure

Our family of four had a wonderful adventure with Captain Dave on the last day of our Barcelona vacation. Dave was very responsive through our email communications to book the trip. The directions to the Gemini were easy to follow and she was as described – well maintained with much character. Captain Dave was very personable but not intrusive – he patiently answered all our questions. We spent over three hours enjoying the beautiful Barcelona skyline. He even stopped and anchored so our kids could swim in the Mediterranean. We would highly recommend Classic Sailing and hope that we have the opportunity to sail on the Gemini someday again.
Kathy M | Rocky Hill, Connecticut

Light airs but great sail

My wife and I went for for an afternoon sail on Gemini with Dave last week and while the winds were light she ghosted along better than I expected.
Stephen B |

Amazing Experience

Recently, Dave took my girlfriend and me on a sunset tour on his beautiful boat, Gemini. Before the trip, he communicated with us so well and had an extremely quick response time. He gave very clear directions on how to get to the boat, and we had no trouble finding it in Port Olympic. We brought drinks and ice, and he brought a cooler, which was so kind of him. He took us out on the Mediterranean, let us go for a swim, sailed along the coastline, and then took us back as the day became night. He even took a couple of pictures for me and my girlfriend during sunset. The trip was beautiful, we had calm water, and if I return to Barcelona, I will definitely re-book this sailing experience with Dave and Gemini. HIGHLY RECOMMENDED. Thanks Dave (:
cac275 | Hattiesburg, Mississippi

Didn't Make The Sail, But Still 5 Stars

Unfortunately we had to cancel our trip the same day because two in our party had a medical emergency and went home. Dave was incredibly easy to work with and responsive and gave us our deposit back without issue. We really appreciated it. We were very bummed to miss the boat trip, but if we are ever in Barcelona again we definitely will put it at the top of the list. Thank you very much again, Dave.
Neeners815 | Jersey City, New Jersey

Spectacular!

This was a highlight of our family visit to Barcelona. With our family of five kids, ranging from a nine year old to a twenty year old, Skipper Dave was the bomb. He answered every one of my older son's questions on the how-to and physics of sailing. We learned a lot. We also were able to stop the boat and jump into the sea for a few minutes, which was a blast. The scenery was spectacular and the boat was unbelievably cool and classic. My wife and teenage daughters loved laying on the deck and soaking in the Vitamin D. To anyone visiting Barca, I'd put this sail trip high on your list. We absolutely loved it.
Eric M |

Spot on

Can't fault the sunset cruise for a perfect anniversary experience. I was a bit apprehensive as I get motion-sickness, but I took a kwells, wore some wrist-bands and kept my eyes on the horizon and had a wonderful time despite it being rather choppy. I also followed Dave's advice and stayed to the middle and centre of the boat (Gemini). Husband used to sail when he was younger and Dave was happy to let him get involved and answer questions about the boat - which is a really beautiful classic boat. Watching the sun fade over the Barcelona horizon was pretty special. (I read the reviews on here prior to booking and the photos just don't do the experience justice.) Dave is a lovely skipper with a lovely boat. Would definitely recommend Classic Sail to anyone looking to do something a bit special in Barcelona.
highspeedcow |

Read all our reviews here

#
#
#
#
#
#
#
#
#