you can optimise the hull, how you can optimise routing, how you can optimise wind sails and combining that will bring us up to 90% c02 reduction. there are unexpected things going on. one example, when the wings are flipping over there and it also starts to move backwards, so these are things we have learned and then look into how we can work on that to make sure you avoid this going forward. when it comes to the full systems over the atlantic ocean you will have very good solid wind more or less all the time. if you get closer to the equator you will have less wind where you need to put in some other kind of energy. it could be a wind assist for you just to reduce co2 emissions from the main engine. you also need a back—up system in case you have no wind. taking new steps will be a challenge.