On Tuesday 25th May we finally got the weather we have been waiting for, a deep subtropical low east of the North Island is directing strong south easterlies and large waves over the east coast of the upper North Island. The conditions we experienced were not as extreme as we would have liked but none the less a sea that many vessels would not have been comfortable in. What we found was 2.5-3m swell with a 6-7 second period with 30knot breeze gusting to our maximum recorded gust of 39Knots at about a 60-70 degree angle to the swell. The Whangarei Ports wave buoy’s were displaying max waves of 4.5 which was typically when the wind chop aligned with a bigger set to create a larger than normal swell.
These would be quite challenging conditions for a less capable hull as it was quite messy and very short, Photo’s never seem to represent the conditions. Mollymawk handled the conditions nicely cruising comfortably at 11-12knots when heading directly into then on various angles too the sea. Not at any stage did we feel the need to reduce speed. We then turned Mollymawk to run with a following sea travelling at 13 -17knots. We found her to be stable at speed and comfortable on a wave. Being a short trip out with many directional changes we were not trimmed for best surfing or for head sea’s, rather a neutral trim. During this testing phase we are in light trim condition to test the performance of the Hull, stabiliser and auto pilot performance without the benefit of ballast fuel and water.
For the first trial in less-than-ideal conditions, we are pleased with the confident and responsive handling of Mollymawk.
Sea trials are continuing, and we are gathering more and more information and data each time we go out. All of this information, videos and data will be made public in the coming weeks.
For more information contact Circa Marine at [email protected]
This is who we are, this is what we do.
Dockside commissioning and sea trials.
Mollymawk has just come to the end of the second week of dockside commissioning and builder’s sea trials. The preliminary data collected is looking very exciting, and the fuel burn numbers really encouraging. We will continue to test the boat in a range of configurations and weather conditions over the coming weeks, after which all of the data will be released along with a full magazine article, videos, interior and exterior photos.
This is who we are, this is what we do
The big day has finally arrived, and after 2 years of construction, Circa 24m # 1 "Mollymawk" has finally made it to where she belongs. Over the next few weeks she will undergo commissioning and calibration of all of the on board systems and equipment, and will then undergo extensive sea trials in a range of conditions to monitor and record her performance and handling. She is a credit to all of the team at Circa Marine, our sub contractors and suppliers.
"This is who we are, this is what we do"
Circa 24 # 1 “Mollymawk’ has made its way out of the shed and is sitting very pretty in the New Zealand Autumn sun, and later tonight she will begin the short journey to the launching facility. Over the coming weeks we’ll keep you posted on any developments, and after sea trials there will be a full magazine article with plenty more photographs and video footage.
‘This is who we are, this is what we do”
It’s been a very busy couple of days here at Circa Marine. A big milestone was reached for Circa 24m hull # 2 ‘Deo Juvante” as the superstructure was carefully lifted into place. Construction doesn't exactly have a reputation for elegance, but there is a fair amount of skill that goes into every move, especially when coordinating two cranes!
In a previous post we looked at part of the heating system in our 24m boats, an important feature on its own, but without a well designed and installed insulation system, all the benefits from heating and cooling can be lost very quickly. We have always looked for and obtained expert advice where we need to, so Circa has collaborated with companies in New Zealand and Australia to deliver a custom insulation package for our boats.
Very early in the design process, it was established that the owner had a keen involvement and well-rounded understanding of the desired comfort levels aboard. That focus on performance – fire, thermal, noise & vibration - continued with Circa Marine’s project team discussing in-depth details of best insulation practices with the Pyrotek NC team in New Zealand and Australia.
Through an open discussion of possibilities, what could and should be done – ensuring passenger safety and comfort, Pyrotek used their extensive know-how, experience, & engineering tools for predicted transmission losses , calculated thermal performances in varying circumstances – developing a total comfort customised solution – encompassing materials for vibration damping & isolation, reduction of air-borne transferred noise and reverberation, incorporating thermal and fire solutions within the weight and cost allowances and delivered on time.
The internal aluminium plating and elements were coated in Pyrotek Decicoat T35 Thermal anti-condensation and corrosion insulation, this is a water-based spray on coating that combines thermal and vibration damping properties with further thermal and acoustic insulation such as Pyrotek Sorberpoly added above this in many areas. Machinery areas have Decidamp Soundpaint, this is a high performance, fast drying, water based viscoelastic vibration damping compound with Thermal insulating properties.
In the voids and other spaces, Pyrotek Sorberpoly and Quadzero acoustic, and thermal insulation has been installed. A comprehensive System was developed for the Engine room and machinery spaces for thermal and acoustic isolation and fire protection.
The final result is an insulation package that exceeds anything Circa has ever installed in any of our previous builds, and will guarantee owner comfort in both high latitude and tropical situations.
As part of the design process, we wanted to make sure our boats offered our customers not only safety and economy, but also comfort, so we have created an environment that will be controllable and will be a ‘nice place to be’ when exploring the higher latitudes. Circa Marine is taking comfort to a new level in our range of boats, with the addition of underfloor heating, a system we have never installed on previous vessels, yet it has so many benefits over traditional heating methods.
The heating system consists of John Guest “speed fit” Underfloor heating components combined with a high efficiency 24v DC Diesel Burner with variable output, which is fitted throughout the accommodation and living areas on the Circa 24m. This heating system is coupled with an extensive insulation package which has been developed by insulation engineers in Australia and New Zealand specifically for these vessels.
With traditional heating systems it is typical to experience hot and cold zones throughout the vessel and even within a room, especially the surfaces and floor tends to retain a cool layer of air around them and are typically cool to touch, with under floor heating covering a large surface area warmth will evenly drift up from the floor and through all the attached surfaces creating a consistent comfortable temperature that can be set to the owners preference within safe predetermined parameters.
Fwd En Suite
Won’t be long till she gets wet, the antifoul process starts soon.
Galley almost complete & mostly covered by protective coverings.
Saloon Glass installed and Helm Structure in place.
Mid Electrical locker well under way. This will be the primary electrical control hub
Once the Services are completed the finished panels will be re-installed.
Still a little way to go on the flybridge, but some good progress happening.
It doesn't look like it, but the gantry crane clears the roof by only 15mm. Deck tread due to start next week.
Fitting of Engines, Genset, Watermaker, Hot water, plumbing, and electrical, whilst providing reasonable access always presents a challenge requiring experience & careful planning.
As with most manufacturers that design and build their own products, we sometimes say to ourselves, ‘What if” and that’s exactly what happened when we recently reconfigured the Circa 20m boat as a low profile option, so we thought, What if we applied the same low profile lines for the Circa 24m as the Circa 20m Adventure Cruiser, and so, we did...
We are happy with the look of the boat, lowering of the VCG and air draft and the option of adding a small option flybridge if desired creating an exceptionally stable and safe platform.
Here at Circa Marine we have come to realise there are many different preferences and design priorities in the the passage-making community and vessel owners, whilst maintaining our core design we can offer quite a variation of design parameters to meet the needs of a wide range of sailors.
2020 has been a year to remember for us all, and I think it is one most of us will be glad to see the end of. Let’s all hope 2021 will be the year the world starts to recover and rebuild.
We feel confident 2021 is going to be a great year for Circa Marine. Our team is working incredibly hard on both of the Circa 24m vessels, with hull #1 due for launch in Q1 and hull #2 later in the year. With growing interest from around the world in these boats, plus our smaller 20m option, we are certain 2021 will see us announcing more new builds of these exciting new additions to Circa’s long history of building world class aluminium boats.
So from all the team at Circa Marine we wish all our customers, owners and followers, a very happy Christmas, and a happy New Year.
Circa Marine welcomes all to view this video of our team in action, in the hope one day you may visit in person.
We are truly excited to announce the newly developed low profile sleek Circa 20m adventure cruiser. A slick looking option.
This lighter sleeker version with no flying bridge, has a greater surface area to add extended Solar capacity, and a low VCG which lends itself nicely to a kite sail system which under typical conditions could provide almost total renewable energy living and propulsion. We believe this version would prove to be a popular addition to the range of Circa Adventure Passagemaker's