ForSea Eyes Eight-Year Payback on World's Largest Battery Ferry

100% Electric Ferry Crossing | Fully Charged 4k — Everything Electric CARS

Everything Electric CARS

Automated high-voltage robotic charging and shallow battery cycling enable continuous commercial ferry operations while yielding a 30% efficiency gain that recovers retrofit costs in eight years.

AI-assisted summary of 100% Electric Ferry Crossing | Fully Charged 4k — original source. Check the original for full context.

Source published:

Key ideas

  • ForSea operates the world's largest retrofitted 100% battery-electric RoRo passenger and vehicle ferry between Helsingør, Denmark, and Helsingborg, Sweden. (1:04)
  • Converting the route's two vessels eliminates roughly 28,000 metric tons of CO2 annually while delivering a 25% to 30% propulsion efficiency improvement over the previous diesel-electric setup. (2:56)
  • The vessel carries a 4.16 MWh lithium-ion battery system across four top-deck containers, deliberately placed high up because the ship's former rail-ferry design provides sufficient stability while ensuring superior fire safety. (4:14)
  • Turnaround times rely on automated quayside robotic arms that connect within 45 seconds, delivering 10.7 kV AC power during brief port stays of 5 to 9 minutes. (8:51)

Detailed notes

## Background Published on YouTube by Everything Electric CARS on May 14, 2019, this episode features host Robert Llewellyn documenting a 100% battery-electric ferry crossing between Helsingør, Denmark, and Helsingborg, Sweden. According to the video description, the heavily trafficked 4-kilometer maritime corridor handles millions of passengers and vehicles annually, operating up to 46 trips a day with rapid shore charging on both sides.

## TL;DR Host Robert Llewellyn meets with Senior Chief Engineer Christian Andersson aboard ForSea's retrofitted roll-on/roll-off vessel, recognized as the world's largest commercial ship converted to pure battery-electric propulsion. Powered by a 4.16 MWh top-deck lithium-ion battery system and four 1,500 kW azimuth thrusters, the ship achieves a 25% to 30% efficiency gain and cuts 28,000 tons of CO2 annually across two sister vessels. High-voltage port infrastructure pairs with an automated robotic charging arm that docks in 45 seconds to recharge the vessel during rapid 5- to 9-minute turnarounds. To endure roughly 17,000 crossings each year, the battery is managed conservatively within a 40% to 66% state-of-charge window, with the capital investment projected to break even in around eight years.

## Atmosphere & style The presentation is conversational, inquisitive, and technically grounded, pairing Robert Llewellyn's boyish enthusiasm with Christian Andersson's calm, matter-of-fact engineering pragmatism. A pervasive sense of wonder runs through the tour, heightened by the eerie, vibration-free silence of a massive vessel carrying heavy trucks and cars across open water without engine roar or exhaust fumes. It feels both like a casual travelogue and an eye-opening glimpse into heavy industrial decarbonization, proving that maritime electrification is already an operational reality rather than a speculative concept.

## Bulletin - [01:04](https://www.youtube.com/watch?v=rE_M1n-ClOA&t=64s) ForSea operates the world's largest retrofitted 100% battery-electric RoRo passenger and vehicle ferry between Helsingør, Denmark, and Helsingborg, Sweden. - [02:56](https://www.youtube.com/watch?v=rE_M1n-ClOA&t=176s) Converting the route's two vessels eliminates roughly 28,000 metric tons of CO2 annually while delivering a 25% to 30% propulsion efficiency improvement over the previous diesel-electric setup. - [04:14](https://www.youtube.com/watch?v=rE_M1n-ClOA&t=254s) The vessel carries a 4.16 MWh lithium-ion battery system across four top-deck containers, deliberately placed high up because the ship's former rail-ferry design provides sufficient stability while ensuring superior fire safety. - [08:51](https://www.youtube.com/watch?v=rE_M1n-ClOA&t=531s) Turnaround times rely on automated quayside robotic arms that connect within 45 seconds, delivering 10.7 kV AC power during brief port stays of 5 to 9 minutes.

## Key takeaways - [01:04](https://www.youtube.com/watch?v=rE_M1n-ClOA&t=64s) The 4 km crossing between Helsingør and Helsingborg operates around 46 times daily, requiring ultra-rapid turnaround and charging schedules. - [01:04](https://www.youtube.com/watch?v=rE_M1n-ClOA&t=64s) Shore-side charging supplies power at 10.7 kV AC and 600 A, stepped down onboard to 750 V AC before conversion to DC. - [01:04](https://www.youtube.com/watch?v=rE_M1n-ClOA&t=64s) Port charging windows are brief, lasting roughly 9 minutes on the Swedish shore and 5 minutes on the Danish shore. - [02:56](https://www.youtube.com/watch?v=rE_M1n-ClOA&t=176s) The retrofit delivers an estimated capital payback period of roughly eight years based on contemporary fuel savings, with at least 15 years of operational life remaining. - [04:14](https://www.youtube.com/watch?v=rE_M1n-ClOA&t=254s) The ship's 4.16 MWh battery system comprises 640 lithium-ion modules totaling approximately 280 metric tons mounted on the open top deck. - [04:14](https://www.youtube.com/watch?v=rE_M1n-ClOA&t=254s) Battery packs output 749 V to 800 V DC nominal, which custom DC-DC converters step up to a stable 1,000 V DC bus for propulsion. - [06:32](https://www.youtube.com/watch?v=rE_M1n-ClOA&t=392s) Propulsion is powered by four 1,500 kW azimuth thrusters totaling 6,000 kW, enabling 360-degree rotation and silent, vibration-free navigation. - [06:32](https://www.youtube.com/watch?v=rE_M1n-ClOA&t=392s) The ferry retains original diesel generators for backup redundancy, operating in pure battery, hybrid, or diesel modes. - [06:32](https://www.youtube.com/watch?v=rE_M1n-ClOA&t=392s) Electrification required extensive portside grid modernization, including dedicated medium-voltage switchgear and 10 kV breakers. - [08:51](https://www.youtube.com/watch?v=rE_M1n-ClOA&t=531s) Automated quayside robotic arms connect the high-voltage charger to the ferry within 45 seconds without manual intervention. - [08:51](https://www.youtube.com/watch?v=rE_M1n-ClOA&t=531s) Battery degradation is minimized across ~17,000 annual crossings by cycling a shallow 27% depth of discharge within a 40% to 66% state-of-charge band. - [08:51](https://www.youtube.com/watch?v=rE_M1n-ClOA&t=531s) While the battery holds enough capacity for 3.5 crossings without shore charging, conservative cycling targets a projected battery lifespan of at least five years.

## Detailed walkthrough ### [01:04](https://www.youtube.com/watch?v=rE_M1n-ClOA&t=64s) 100% Electric Ferry Across the Øresund Strait

Robert Llewellyn opens the episode aboard a passenger and vehicle ferry making the crossing between Helsingør, Denmark, and Helsingborg, Sweden. Rather than spewing emissions from burning bunker fuel, this vessel operates on 100% battery power. Host Robert meets with Christian Andersson, Senior Chief Engineer at ForSea, who explains that converting the vessel was a major undertaking that took almost three years of planning and development before entering continuous service in November.

The route is an exceptionally busy one, completing approximately 46 single crossings every 24 hours over a distance of roughly four kilometers. The turnaround is relentless, requiring ultra-fast, high-power top-ups on both shores. Christian explains that the vessel charges at 10.7 kilovolts AC and 600 amperes. The charging process lasts about nine minutes on the Swedish side and around five minutes on the Danish side, drawing massive amounts of power through an onboard step-down transformer and converter system.

```mermaid flowchart LR accTitle: Ferry Charging and Power Distribution accDescr: Flow diagram showing port power step-down, conversion, and battery propulsion setup. subgraph Shore["Port Power"] A["Shore Grid<br/>10.7 kV AC / 600 A"] end subgraph Vessel["Onboard Power Train"] B["Charging Transformer<br/>750 V AC"] C["Inverter / Converter<br/>DC Conversion"] D["Lithium-ion Battery Banks<br/>4.16 MWh (749–800 V DC)"] E["DC-DC Step-Up<br/>1,000 V DC Bus"] F["4x Thruster Motors<br/>6,000 kW Total (4x 1,500 kW)"] end A -->|"Automated Robot Arm"| B B --> C C --> D D --> E E --> F ```

- **Route distance**: Approximately 4 kilometers (2.5 miles) across the strait between Denmark and Sweden. - **Crossing frequency**: Up to 46 single crossings every 24 hours (crossings every 15 minutes across the fleet). - **Shore charging rates**: 10.7 kV AC input at 600 amps. - **Port dwell/charge times**: ~9 minutes in Helsingborg (Sweden) and ~5 minutes in Helsingør (Denmark). - **Secondary transformer output**: Steps down the incoming AC power to approximately 750 volts AC before inverting to DC.

[02:56](https://www.youtube.com/watch?v=rE_M1n-ClOA&t=176s) Scale, Environmental Impact, and Retrofit Economics

Although observers might expect an all-electric vessel to be a small demonstration craft, the ferry is a massive commercial roll-on/roll-off (RoRo) ship loaded with heavy trucks and cars. It holds the title of the largest vessel in the world retrofitted to fully battery-electric propulsion. Christian underscores the environmental dividend: “In terms of CO2, we will save about 28,000 tons a year for the installation of the two ships, so it's a huge benefit for the local environment of course.”

In addition to removing direct exhaust emissions, the ship achieved an overall system efficiency gain of 25% to 30% compared to its previous diesel-electric drive train. Financially, Christian calculates that based on contemporary fuel prices, the capital investment will achieve full payback in approximately eight years. The company intends to operate the retrofitted vessel for at least 15 more years, unlocking significant operational savings once the investment is amortized.

- **Vessel status**: The world's largest ship converted to 100% battery propulsion. - **Emissions eliminated**: ~28,000 metric tons of CO2 saved annually across the two converted sister ships (*Tycho Brahe* and *Aurora*). - **Efficiency improvement**: 25% to 30% more efficient than the vessel's original diesel-electric propulsion configuration. - **Financial payback window**: Anticipated return on capital investment in approximately 8 years. - **Projected service life**: Intended to remain in commercial operation for at least 15 additional years post-retrofit.

[04:14](https://www.youtube.com/watch?v=rE_M1n-ClOA&t=254s) Battery System Architecture and Top-Deck Placement

Touring the vessel's upper levels, Christian opens the doors to the dedicated battery enclosures housing an enormous 4.16 MWh energy storage system. The installation contains 640 lithium-ion battery modules partitioned across four dedicated containers. Instead of placing the massive battery packs deep in the hull where heavy ballasts usually sit, they are located high on the vessel's top deck. Christian explains that because the vessel was originally constructed as a rail ferry, it possesses immense baseline stability; adding 280 metric tons of battery containers up top causes negligible impact on its center of gravity. Crucially, locating the batteries on the open upper deck provides superior emergency safety in the event of fire or thermal runaway.

Inside the battery house, coolant circuits constantly cycle through inlet and outlet piping to regulate cell temperatures. The battery cells are wired in serial strings of eight modules producing roughly 749 to 800 volts DC. Because the ship's propulsion thrusters demand 1,000 volts DC, custom DC-DC converters modulate and step the voltage up from 750–800 V to a stable 1,000 V bus.

- **Total onboard energy capacity**: 4.16 megawatt-hours (MWh). - **Pack configuration**: 640 lithium-ion battery modules organized across 4 top-deck containers. - **Added top-deck weight**: Roughly 280 metric tons. - **Internal voltage**: Serial strings of 8 modules yielding ~749 V to 800 V DC nominal. - **Thruster bus requirement**: Stepped up to 1,000 V DC via high-power DC-DC converters.

[06:32](https://www.youtube.com/watch?v=rE_M1n-ClOA&t=392s) Propulsion, Silent Operation, and Shore Infrastructure

Propulsion is handled by four azimuth thrusters—two at the bow and two at the stern—rated at 1,500 kW each, delivering a combined 6,000 kW (over 8,000 horsepower) of instant power. This omnidirectional thruster layout allows the ferry to spin 360 degrees effortlessly inside tight harbor basins. Robert is struck by the uncanny silence and complete lack of the customary diesel vibration: passengers simply look out the window and discover the vessel is moving at full speed without having heard or felt engines spooling up. For the engineering crew, abandoning the daily operation of noisy diesel engines has radically improved working conditions onboard.

The original diesel generators remain installed as a backup "take-me-home" redundancy. The vessel supports three operational modes: pure battery mode, hybrid mode, and diesel mode. In the event of shore-robot maintenance, the ship runs in hybrid mode, generating onboard diesel power solely to recharge the battery banks rather than driving the shafts directly.

Christian notes that transforming the ship was only half the technical challenge; ports on both sides lacked 10-kilovolt medium-voltage switchgear and high-capacity breakers, demanding substantial portside infrastructure investments. Christian highlights that while the technology works seamlessly, widespread maritime adoption requires significant grid and port infrastructure modernization across global shipping terminals.

- **Thruster configuration**: 4 azimuth thrusters (2 forward, 2 aft) of 1,500 kW each, totaling 6,000 kW (6 MW). - **Maneuverability**: Full 360-degree rotation in place. - **Operating modes**: Pure Battery (standard), Hybrid (charging batteries via generator), and Diesel backup. - **Port electrical upgrades**: Installation of dedicated medium-voltage substation infrastructure and 10 kV medium-voltage breakers in both Helsingborg and Helsingør.

[08:51](https://www.youtube.com/watch?v=rE_M1n-ClOA&t=531s) Automated Robotic Charging Arms and Battery Longevity Strategy

Because the vessel operates on rapid turnaround cycles where cars drive off and on within minutes, manual plug connections were ruled out. Instead, an automated laser-guided robotic arm on the quayside locates the vessel's receiver socket and plugs in within 45 seconds of the vehicle ramp dropping: “The most remarkable thing I guess is the charging system because we have such short turnaround in the port, so we need to have a very efficient charging system, so it's fully automated.” Charging initiates instantly without requiring manual intervention from crew members or shore workers.

Over the course of a year, the ferry logs around 17,000 individual crossings, accumulating an equivalent number of high-power charging cycles. To maximize cell life, the engineering team manages the battery pack conservatively. Although the battery packs could theoretically complete three and a half full round-trips on a single charge without plugging in, doing so would accelerate cell degradation. Instead, the pack is maintained within an optimal window, cycling through a shallow 27% depth of discharge per trip and keeping state-of-charge (SoC) strictly between 40% and 66%. Christian projects a minimum battery lifespan of five years under this strict cycling regime.

As the ferry glides smoothly into dock, Robert remarks on how quiet and effortless the trip was. Christian confirms that the project's success has attracted maritime shipping companies from around the globe eager to study their real-world electrification blueprint.

- **Robotic connection speed**: Fully autonomous connection in approximately 45 seconds. - **Annual crossings**: ~17,000 single crossings and docking charges per year. - **State-of-charge operating band**: Kept between 40% and 66% SoC during routine operation. - **Depth of discharge (DoD)**: ~27% per crossing cycle. - **Uncharged range buffer**: Up to 3.5 consecutive crossings possible on battery power alone if port charging is temporarily bypassed. - **Expected battery lifespan**: Projected at 5 years under current operational duty cycles.

## Notable quotes > [08:51](https://www.youtube.com/watch?v=rE_M1n-ClOA&t=531s) The most remarkable thing I guess is the charging system because we have such short turnaround in the port, so we need to have a very efficient charging system, so it's fully automated. — Christian Andersson

## Mentioned Christian Andersson, Robert Llewellyn, ForSea, Tesla Model 3, Tycho Brahe, Aurora, Helsingborg, Helsingør, Øresund Strait, Denmark, Sweden, Fully Charged, Everything Electric CARS

## Video description On our recent Tesla Model 3 test drive we crossed from Denmark to Sweden on a 100% battery electric ferry. The 4 kilometre crossing between Helsingborg in Sweden and Helsingør in Denmark doesn't seem that far, but this ferry is crossing up to 46 times a day, and charging for a few minutes each side. The route handles more than 7 million passengers and almost 2 million vehicles each year with crossings every 15 minutes.

More info: https://www.forseaferries.com/

We are only able to produce this channel thanks to the very generous donations from our Patreon supporters. If you would like to consider joining them, have a look at this: https://www.patreon.com/FullyChargedShow

[Source](https://www.youtube.com/watch?v=rE_M1n-ClOA)

中文简报

ForSea预计全球最大电池动力渡轮将在八年内收回成本 自动化高压机器人充电系统与浅充浅放策略支持渡轮实现不间断商业运营，同时带来30%的效率提升，可在八年内收回改装成本。 主持人Robert Llewellyn登上了ForSea完成改装的滚装客货渡轮，并与资深总工程师Christian Andersson进行交流。该船被公认为全球最大的全电池电力驱动改装商用船只。船舶搭载安装于顶层甲板的4.16兆瓦时锂离子电池系统，配备四台1,500千瓦方位推进器，实现了25%至30%的效率提升，且两艘姊妹船每年合计减排28,000吨二氧化碳。港口的高压基础设施与自动化机器人充电臂相连，可在45秒内完成对接，在短短5至9分钟的停泊周转时间内为船舶快速充电。为应对每年约17,000次航行，电池充放电区间被保守控制在40%至66%的荷电状态范围内，预计该项目的资本投资将在八年左右实现收支平衡。 ForSea在丹麦赫尔辛格与瑞典赫尔辛堡之间运营全球最大的改装纯电动滚装客车两用渡轮。 (1:04) 该航线两艘船舶的改造每年减少约28,000公吨二氧化碳排放，且推进效率相比此前的柴电系统提升了25%至30%。 (2:56) 该船在顶层甲板的四个集装箱内配备了4.16兆瓦时的锂离子电池系统，之所以特意将其置于高处，是因为该船原有的火车渡轮设计具备足够的稳性，同时能确保更优异的防火安全。 (4:14) 周转时间依托于码头自动化机械臂，可在45秒内完成连接，在5至9分钟的短暂靠港期间输送10.7千伏的交流电。 (8:51)

Source quotes

[8:51] Christian Andersson: The most remarkable thing I guess is the charging system because we have such short turnaround in the port, so we need to have a very efficient charging system, so it's fully automated.

Original transcript

[0:11] [Music] [0:29] [Music] [0:47] [Music] [1:04] hello welcome to fully charged this time [1:06] coming to you from a ferry crossing from [1:08] Denmark to Sweden [1:09] burning bunker fuel no not this one this [1:13] one is 100% electric [1:16] [Music] [1:20] so Christian for stuff thank you so much [1:23] for letting us ride on this amazing [1:24] ferry I mean it's been a real joy it's [1:26] been something I've looked forward to [1:27] for a long time and it's so good to see [1:29] it actually functioning I'm sure you're [1:31] very pleased yeah it's been a long [1:34] process to get to develop it exactly [1:37] there's been the long project we've been [1:39] planning for it's almost took us three [1:41] years to come to an end right yes yes [1:43] but it's been running now since November [1:45] yeah since November yes how many you do [1:47] so many crossings because what we can't [1:49] understand is how quickly it's going [1:50] back and forth exactly what you do about [1:52] 46 crossing single crossings every 24 [1:56] hours so just give me the quick stats [2:01] because it just blew my mind when I [2:02] first heard it we charged with the 10 [2:05] kilovolts for about nine minutes in [2:08] Sweden and five minutes in Denmark and [2:11] 600 amps so it's a lucha Mountain Power [2:15] a little bit more than your average [2:16] electric car take exactly what we have [2:19] here now is they're charging transform [2:22] walk right so this is ten point seven [2:25] kilo volts the AC coming in right and on [2:29] the secondary side we have about 750 [2:33] volts and that is then going into the [2:37] converters yeah and [2:39] making it to DC right oh I see so this [2:44] is like a second conversion it's the big [2:46] in work oh yeah yeah so that and that [2:48] gives you enough to get across because [2:50] it's not a very long what's the distance [2:52] where travel distance is about 4 [2:55] kilometres right [2:56] yeah but it's a big ship because I think [2:58] I expected something much smaller yeah [3:00] it has this has a lot of trucks on it [3:02] and a load of cars on yes it's it's a [3:04] big trip and it's actually the biggest [3:07] ship in the world there have been [3:08] converted to better issues fully better [3:10] issues in terms of co2 we will save [3:13] about 28,000 tons a year for the for the [3:16] installation of the two ships so it's a [3:18] huge benefit for the local environment [3:21] of course and so that's the big [3:24] difference [3:25] also the the system and totally will be [3:28] an increased efficiency about about 25 [3:32] to 30 percent of the efficiency between [3:35] the old diesel electric system and now [3:38] the director even batteries is tonight [3:40] yeah and so I mean is that is that [3:42] reflected in the running cost we we [3:44] think that we will the cost will be paid [3:49] in about eight years the investment with [3:52] the with the fuel fuel prices that is [3:55] today right but this could of course [3:57] change yeah yeah so I see so over that [4:00] eight year period you are in ten years [4:02] you will have saved actual money [4:04] including all the investment you've put [4:06] in yeah that's that's the plan and we [4:08] are planning to sail at least 15 more [4:11] years with the ship by doing this [4:12] retrofits [4:14] [Music] [4:16] so this is equal to run megawatts [4:20] right inside here yeah so it's a little [4:24] down to power Wow [4:26] the batteries are in there 800 volts and [4:30] we need 1000 volts DC for the propulsion [4:34] Indians right so they are modulating [4:36] between 800 and 1000 dollars right so [4:40] that is the DC DC converter doing that [4:43] and it's also rectifying the right so it [4:47] is amazing so the batteries are they are [4:49] lithium-ion batteries [4:51] yes you're running it on yes but quite a [4:53] lot it's a lot these 640 batteries right [4:57] so and they are installed in four [5:00] different containers and they're on the [5:03] top because I would assume they would be [5:05] right down low for weight and balance [5:06] but it does appear so big yeah this the [5:09] ship is or originally built as a train [5:12] ferry so it has a lot of stability in [5:14] itself from the beginning so it doesn't [5:17] put any difference on the stability by [5:19] adding these two animated tones on top [5:22] of the ship right and for a safety point [5:25] it's very good to have all this power on [5:27] top of the ship in case of some yeah [5:30] there is a fire a fire or deletion or [5:33] whatever they are safe up here so what [5:36] is the total kilowatt hours of the [5:38] onboard that your your point 1 megawatt [5:41] hours so we have a lot of power in here [5:45] and this is all the cooling system and [5:48] they exactly Inlet and outlet and the [5:55] big cable assists the powers of DC power [5:57] cables and they are connected serial in [6:02] strings with eight their modules [6:04] together right so that makes it about [6:07] seven hundred forty nine volts for one [6:10] that's what we are modulating then from [6:13] this 749 750 up to 1000 we there so we [6:19] get the correct DC to the propeller [6:21] motors just see because it's gonna start [6:24] charging so charging charging that [6:26] because [6:27] I have - here I see so that means we're [6:29] putting where we're pulling a current [6:32] yes so there are motors then driving at [6:36] the front and at the back yeah that's [6:37] correct it's for trustus so each of 1500 [6:42] kilowatts so the other six thousand [6:44] kilowatts so it's a very flexible ship [6:47] and maneuverable we can change around [6:50] turn around 360 degrees very easy but [6:53] that's the thing I've noticed in the [6:55] crossings we've done is you know we've [6:57] been talking and then I certainly look [6:59] out and I go oh we're moving I had no [7:01] idea so there's not because even on a [7:02] large ship you might be aware of a [7:04] diesel engine you feel that vibration [7:06] secondly there's nothing no clue [7:08] suddenly you're moving and that's it [7:10] it's very sand and the working [7:11] environmental for their engine query is [7:13] a huge benefit because we don't run [7:15] there these in general into sin anymore [7:17] so you do there are diesel generators on [7:19] board [7:19] yeah handing you so for emergency use or [7:21] at times exactly like but it's consider [7:24] as to take me home arrangements and we [7:27] can run actually in three different [7:28] modes we can run in battery mode hybrid [7:31] mode or diesel moment but we don't run [7:33] in decent mode we can do when we do for [7:36] example maintenance on the charging [7:38] robots or whatever we'll might need to [7:39] do some hybrid crossings but then we [7:42] charge the batteries of with our own [7:45] diesel and right so the diesel engine [7:47] all it's doing is running a generator [7:48] that charge the batteries exactly yeah [7:50] system still effectively the drive [7:52] system is the same it's the same pretty [7:54] much the same we had to change the [7:56] propeller motors but that's all we did [7:58] in the engine room yeah so yeah so and [8:02] that's the other important thing it's a [8:03] converted ship so it was a diesel [8:05] electric ferry to start with yeah and so [8:08] you you basically put them effectively [8:10] put the batteries in them and the [8:11] charging system in that's what we have [8:13] added and also there was a quite a lot [8:17] of investments done with the [8:19] infrastructure in the ports in both [8:21] ports as well because we we didn't have [8:23] 10 mega kilovolt [8:26] medium-voltage breakers in in the port [8:30] area so we had to do all so yeah that [8:33] was that is maybe the in future [8:36] installation that is what is we can we [8:39] have proved now that we can do this its [8:41] effect and but the needs to do a lot of [8:44] improvements within infrastructure in [8:46] different ports all over where they will [8:48] do this kind of installations yeah the [8:51] most remarkable thing I guess is the [8:53] charging system began we have such short [8:56] turnaround in the poor yeah so we need [8:58] to have a very efficient charging system [9:01] so it's fully automated so when we lower [9:04] the car ramp and start loading or [9:06] offloading because we immediately start [9:09] charging see yeah so it's not dependent [9:12] on any person on the bridge Shore right [9:14] drying somebody else yeah fully [9:16] automated [9:17] [Music] [9:31] there the robot arms are extraordinary I [9:34] mean is that the first time that sort of [9:35] system has been used as it is yeah yeah [9:38] it's the first time so and and the [9:40] connecting time is about 45 seconds and [9:43] we needed a very quick because we need [9:46] to charge as long as possible as we have [9:48] a very short turnaround time in the port [9:51] and then so in a year then how many [9:53] crossings will you do yeah I think you [9:54] did tell me I missed a great many yeah [9:57] it's in a year it's I think it's [10:00] something about 17,000 crossings or [10:03] something like that yeah so that's [10:05] 17,000 charges or no it's a lot of [10:11] charging yeah so I mean and what and [10:13] because it's still what you've been [10:15] running since December since November we [10:17] have yeah yeah we can say that so yeah I [10:20] mean at the moment then I suppose you [10:21] don't quite know how that how the [10:23] batteries will hold up but what do you [10:24] expect again we expect to have them [10:27] running for five years that's [10:29] theoretically [10:30] but we can see what we've seen so far we [10:33] think we will make it we will we are the [10:36] optimum area to do discharge between 40 [10:41] to 66 percent of the batteries the state [10:44] of charge so they don't often go below [10:47] 40 you know just so much we don't want [10:49] to do that we can do that depending on [10:51] the traffic situation in the crossing [10:53] because of other ships and so on so that [10:55] happens but we prefer to be in this area [10:58] the depth of the charge should be about [10:59] 27 percent for this batteries right [11:02] that's why we're charging in both ends [11:04] yeah to keep them also in fact you could [11:06] do more we could actually theoretically [11:09] we could do about three and a half [11:10] crossing without charge but that's not [11:13] optimal for the batteries and we don't [11:15] want to get that low [11:18] [Applause] [11:20] we're about to come into dock Christine [11:22] so I thank you so much for your time [11:24] today you've been brilliant at [11:25] explaining it all we've had an amazing [11:27] crossing it's very calm but yeah thank [11:30] you so much and really good luck with it [11:32] I hope lots of well I know lots of [11:34] people have come to see it other [11:35] shipping companies aliens see us yeah [11:37] sounds like it's good it's been a great [11:38] success [11:40] [Music] [12:01] you [12:06] [Music] [12:14] you