![](https://s3images.coroflot.com/user_files/individual_files/156175_OHyKh0GyS638kEwiOIrrYFzkI.jpg)
3900 CAD model - ACM
![](https://s3images.coroflot.com/user_files/individual_files/156175_809MtfYdkID91T21o07eTXwTN.jpg)
Key ideation sketch
![](https://s3images.coroflot.com/user_files/individual_files/156175_24Zi_wqRTk_QFMSKyHr2TA9Rc.jpg)
3900 ideation
![](https://s3images.coroflot.com/user_files/individual_files/156175_gHL5qbHmQ5QqzMvfuf8umRnDD.jpg)
CAD development
![](https://s3images.coroflot.com/user_files/individual_files/156175_0LgQiDjXnznb8hhwG4V82vdnB.jpg)
CAD development
![](https://s3images.coroflot.com/user_files/individual_files/156175_YlhYi5h8gMOVHXCM84la5d15y.jpg)
Construction
![](https://s3images.coroflot.com/user_files/individual_files/156175_mdMypOeh3fC5x39KBXBtnFscQ.jpg)
Construction
![](https://s3images.coroflot.com/user_files/individual_files/156175_T0ycO2frsIzj5UDsNZFASZqxi.jpg)
Nearly complete !
![](https://s3images.coroflot.com/user_files/individual_files/156175_oZn7qXusXmVRvXo_7hG27eoTh.jpg)
Sea trials
![](https://s3images.coroflot.com/user_files/individual_files/156175_XM8dQ_e6DLe4ahQX3uSpJ1bB7.jpg)
Sea trials
![](https://s3images.coroflot.com/user_files/individual_files/156175_ZxEl_5vqiNvObIkXhjSYOe_Dj.jpg)
Sea trials
![](https://s3images.coroflot.com/user_files/individual_files/156175_lnlctzjL2sQPfnPQz2RQvWAmX.jpg)
Sea trials
![](https://s3images.coroflot.com/user_files/individual_files/156175_rWPTp00V7FDYTsRxTgsFuZx6X.jpg)
3900 at speed
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