How are Commercial Ships Tougher?

Commercial ships are a world apart from recreational yachts. They contend with tougher requirements, and they need far more safety features. But what are those differences? How is the commercial ship safer?
View more tips and helpful articles at www.dmsonline.us/
References
[1] Official Journal of the European Union, "Annex 1: Essential Requirements," in Recreational Craft Directive, 20 Nov 2013, p. 354/114.
[2] Engineering Toolbox, "Endurance limits and fatigue stress for steels.," Engineering Toolbox, [Online]. Available: www.engineerin.... [Accessed 07 May 2022].
[3] ASM International , Elements of Metallurgy and Engineering Alloys, ASM International, 2008.
[4] T-ISS Safety Supplies, "Product Spotlight: Hydrostatic Release Unit (HRU)," T-ISS Safety Supplies, 19 Nov 2018. [Online]. Available: t-iss.com/2018.... [Accessed 7 May 2022].
[5] Infinity 8 PTE LTD, "Fixed CO2 Fire Suppression System," Infinity 8 PTE LTD, [Online]. Available: infinity8.com..... [Accessed 07 May 2022].
[6] Parker, "Marine Fuel Filter Water Separator - Racor Turbine Series," Parker, [Online]. Available: ph.parker.com/.... [Accessed 08 May 2022].
[7] Quick PS, "A Ship Transports Gas in the Middle of a Storm," Unsplash, 20 Aug 2021. [Online]. Available: unsplash.com/p.... [Accessed 08 May 2022].
[8] "The Beaufort Wind Scale," [Online]. Available: www.delta-s.org.... [Accessed 08 May 2022].
[9] Wikipedia Authors, "EPIRB," Wikimedia Commons, 01 May 2013. [Online]. Available: en.m.wikipedia.... [Accessed 08 May 2022].
[10] Safe T Made, "HRU LR-2," Safe T Made, [Online]. Available: safetmade.com/.... [Accessed 08 May 2022].
[11] Wikipedia Authors, "Bavaria Cruiser 45," Wikimedia Commons, 05 Mar 2012. [Online]. Available: commons.wikime.... [Accessed 23 May 2022].