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Stay up to date with our latest project, building a 24m Expedition Motor Yacht in Whangarei, New Zealand.

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The  ‘New Normal’ Covid world we are all now living in has certainly made a lot of people take stock of their lives and seems to have caused a growing number to think about what’s important to them. This time to reflect and plan has given opportunity to dream about changing their lifestyle, consider their future plan and outlook on life.

 

Over the past 12 months or so we have been having more and more conversations with people from all over the world about this very thing, usually the conversation will start with “We have been thinking about up sizing (or down sizing) our current boat in the next 2 -5 years ’ so from that initial starting point we go on to talk about what they really want to do with the boat, what is their operating profile, we discuss the merits of one hull form over another, how much accommodation, the value of eco technologies such as kite sails or hybrid technology, accommodation, range, speed and of course, budgets and timeframes.

 

We have found over the last 12 months the delivery and lead times of imported items into NZ has been growing as production output around the world has been affected by various lockdowns and shipping difficulties which has also impacted on our delivery timeframe.

 

With the roll out of vaccines around the world and countries beginning to open up their borders, cruising options will expand to accommodate peoples plans and dreams within the next couple of years.

 

So if you are seriously considering going cruising in 2 to 4 years time, then you really do need to start talking to us now.  The typical timeline for a new build involves around 2- 6 months of design and  specification work we have to undertake before the actual build can start, and with the current build time for a new Circa 24m of around 20 -24 months its easy to see that if you want to be enjoying the boat in 2- 4 years, then the sooner you start the ball rolling the sooner you will take ownership of your new vessel.

 

In todays high tech world the ability to communicate and share drawings, progress photo’s and video walkthroughs, negates the closed borders during the build process essentially bringing the build to you. Here at Circa we work with our clients to ensure that they are kept well informed and current with all aspects of the build making the build truly a team effort.

 

 

We have been fortunate here in NZ to remain in production with only small interruptions of short covid lockdowns, our confidence is high that this pattern should continue especially as our vaccine rollout is now well underway.

 

Time goes really quick when you have a deadline in mind, don't allow perceived barriers delay your dreams becoming reality, contact us now.

 

[email protected]
 

 

This is who we are, this is what we do.

 

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The story so far.

 

Over the past few weeks, we have spent almost 75 hours putting Mollymawk through her paces and have now and amassed a great deal of information and raw data.  We are really happy with the performance data recorded so far and will be publishing it all soon, but thought we’d give our followers a brief synopsis of where we are at.

 

The hull design has proved to be very successful, and a big shout out to the team at LOMOcean Marine for the work they have done delivering the vessel and the performance to our specified brief.  The hull is efficient and slippery, which is something to be aware of when approaching a dock.  The hull comfortably pushes through a head sea as the fine entry slices through the waves with ease, the motion is very soft with the stern stable and offering just enough resistance to deter pitching without being so stiff to create any accelerated motion, ensuring a soft predictable ride into head and quartering seas.

 

On one day we had a gale blowing 40 knots, with 3m – 4m swells, where we took the opportunity to run over some shallow water of 10-12m deep, where the swell was standing and almost breaking. We ran this area at all angles including beam on the hull performance is confident and reassuring, when beam on to these steep swells the hull just lifted with little or no heel as the wave passed under the hull.  The question we are always being asked is “will it surf?” Well, we are finding surfing is very easily achieved, and with adjustments of fore/aft trim with ballast fresh water tanks strategically placed for this purpose, optimising the trim to suit the wave period and size, really enhances the hulls ability to hold the wave for extended time periods.

 

To date, the top speed recorded as an average with and against a small tidal flow is 13.5knots (excluding surfing) The fuel burns we have recorded are showing quite a linear curve up to almost 12 knots, that allows the owner to cruise at a speed which they feel most comfortable at, with the best balance of speed and fuel burn being between 10 - 11.5 knots, but as an example at 11 knots we are burning 26L of fuel per hour.

 

The range of the vessel will always be decided by many factors, including the chosen cruising speed, with the 11,500L tank capacity, and with a 10% reserve the range from 10 to 11.5 knots is approximately 5250NM and 4000NM respectively.

 

‘Mollymawks’ owners arrived in NZ almost two weeks ago, and are now living aboard, and we are pleased to report they are very happy with all aspects of the vessel, from performance, handling and steering, to the quality of the fixtures/ fittings and all aspects of the build quality.  During the build the owners were unable to visit NZ, but had seen many hundreds of photo’s, as well as video walkthrough’s & onboard video skype calls, but once aboard the vessel and quality truly came to life, but that’s another article.

 

We are now in the early stages of owner trials and training which will continue for another few weeks, as part of this, Mollymawk’s tanks have been fully topped off with fuel, which will allow us to gain more data on heavy departure condition performance, although we are not expecting to see any significant change in the fuel burn data.

 

We recently undertook the stability test, and the stability curve measured exceeds that of similar sized vessels we have previously built, both in arrival and departure loads.

 

Designers comment below...

 

"Please find attached a stability wash up based on the information provided to us Friday last week. The results show that the boat passes two well respected stability codes and with good margins."

 

We are now looking forward to the future launch of Circa 24m # 2 “Deo Juvante” which is equipped with larger MAN engines to meet CE compliance and the predictions show a top speed of 17 knots. We have on the drawing board a smaller 20m model, and a larger 30m -35m model in line for development on request.

 

For further information on “Mollymawk” data, vessel options and build slot availability please contact us.

 

[email protected]


 

 

This is who we are, this is what we do.

 

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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.

 

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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

 

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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"

 

 

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A big day today, Circa 24 #1 “Mollymawk” is sitting pretty in the early morning sun preparing for launching very soon.

 

More photos and updates soon.

 

This is who we are, this is what we do.

 

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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.

 

Circa Marine Mollymawk

 

Circa Marine Mollymawk

 

Circa Marine Mollymawk

 

Circa Marine Mollymawk

 

Circa Marine Mollymawk

 

Circa Marine Mollymawk

 


‘This is who we are, this is what we do”


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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!   

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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.

 

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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.

 

 

Aft Cabin

 

 

Forward Cabin

 

 

Fwd En Suite

 

 

Hallway

 

 

Main Saloon

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Won’t be long till she gets wet, the antifoul process starts soon.

February Newsletter

 

 

Galley almost complete & mostly covered by protective coverings.

February Newsletter

 

 

Saloon Glass installed and Helm Structure in place.

February Newsletter

 

 

Mid Electrical locker well under way. This will be the primary electrical control hub

February Newsletter

 

 

Once the Services are completed the finished panels will be re-installed.

February Newsletter

 

 

Still a little way to go on the flybridge, but some good progress happening.

February Newsletter

 

 

It doesn't look like it, but the gantry crane clears the roof by only 15mm. Deck tread due to start next week.

February Newsletter

 

 

Fitting of Engines, Genset, Watermaker, Hot water, plumbing, and electrical, whilst providing reasonable access always presents a challenge requiring experience & careful planning.

February Newsletter

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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.

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