# Very Slender Vessel

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Type of high-speed, wave-piercing craft

A **Very Slender Vessel** (VSV) is a high-speed, [wave-piercing craft](/source/Wave-piercing_hull). It is designed to give a comfortable ride over long, high-speed transits in high seas.[1]

Normal boats travelling at high speed in rough seas can produce a very uncomfortable ride with [g-force](/source/G-force) as high as 20g. Wave piercing vessels avoid this by going through waves instead of over them, at speeds that can exceed 60 knots (110 km/h).[1][2]

## Military

### North Korea

It was revealed in 2015 that North Korea had under development a VSV attack boat, reported to be deployed on the western side of the Korean peninsula.[3] It was first detected on trials by satellite surveillance late in 2014. The first images of the completed vessel were released by North Korean media in July 2018, after a visit to the [Chongjin](/source/Chongjin) shipyard by leader [Kim Jong-un](/source/Kim_Jong-un).[4]

### Singapore

The [Singapore Army](/source/Singapore_Army) operates VSV craft in [special forces](/source/Special_forces) units. It was speculated in 2018 that they were to be replaced by new craft.[5]

### United Kingdom

VSV craft such as the [Royal Marine VSV](/source/Royal_Marine_VSV) are used by the [Royal Marines](/source/Royal_Marines) and the [Special Boat Service](/source/Special_Boat_Service).

## Notes

1. ^ [***a***](#cite_ref-GSO_1-0) [***b***](#cite_ref-GSO_1-1) ["Very Slender Vessel"](http://www.globalsecurity.org/military/systems/ship/vsv.htm). www.globalsecurity.org. 7 July 2011.

1. **[^](#cite_ref-2)** Julian, Alex. ["MarySlim yacht makes debut"](https://www.topspeed.com/boats/boat-news/maryslim-yacht-makes-debut-ar31131.html). *topspeed.com*. Retrieved 8 June 2018.

1. **[^](#cite_ref-3)** Ryall, Julian (28 May 2015). ["North Korea deploys new generation of fast warships"](https://www.telegraph.co.uk/news/worldnews/asia/japan/11634933/North-Korea-deploys-new-generation-of-fast-warships.html). *The Telegraph*.

1. **[^](#cite_ref-4)** Macdonald, Hamish (19 July 2018). ["First images of newly-built North Korean warship published by state media"](https://www.nknews.org/2018/07/first-images-of-newly-built-north-korean-warship-published-by-state-media/). *North Korea News*.

1. **[^](#cite_ref-5)** Wong, Kelvin (18 December 2018). ["Update: Singapore's new stealth combatant craft breaks cover"](https://web.archive.org/web/20181218175439/https://www.janes.com/article/85286/update-singapore-s-new-stealth-combatant-craft-breaks-cover). *IHS Jane's 360*. Singapore. Archived from [the original](https://www.janes.com/article/85286/update-singapore-s-new-stealth-combatant-craft-breaks-cover) on 18 December 2018.

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Adapted from the Wikipedia article [Very Slender Vessel](https://en.wikipedia.org/wiki/Very_Slender_Vessel) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/Very_Slender_Vessel?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.