# New Launch - Two Point Two Hook Lift Design (DNV) - TheNavalArch

Discussion in 'Software' started by thenavalarch, May 11, 2019.

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### thenavalarchJunior Member

www.thenavalarch.com launches the Two-Hook, Two-Point lift design spreadsheet based on DNV
Two hook – two point lifts are characterized by a delicate balance between two hooks, and factors like tilt in cargo and COG envelope need to be accounted for.

This app is a comprehensive calculator for two-hook two-sling lifts. It can be used to design a new lift configuration using two slings and two cranes, or it can be used to verify an existing one. It follows the latest DNV-ST-N-001 guidelines.

• It calculates the design load, the Dynamic Amplification Factor (DAF), and point loads
• It checks the crane lifting capacity, tilt angle, and calculates the lift point load
• The resulting forces and angles can be used to design/check the pad-eye for lifting
• It also provides an elaborate sling design sheet based on DNV-ST-N-001
• Sling Design can be done for Vertical Hitch, Choker Hitch or Basket Hitch

Two point (two hook) lift design (as per DNV) - TheNavalArch https://thenavalarch.com/software/marine-operations/two-point-two-hook-lift-design-as-per-dnv/

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### jehardimanSenior Member

I hope that graphic is not a real screenshot. And you need to add the below the hook gear weight.

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### BlueBell. . . _ _ _ . . . _ _ _

It's grossly not even to scale...

4. Joined: Aug 2004
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### jehardimanSenior Member

That's forgivable in in solver (not so much in an arrangement). After watching the sales video and looking at the stills, I still have issues and would want to crawl under the hood. Maybe it's 30 years of using P-307 and P-9290 while fighting with DNV that makes me cynical.

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### thenavalarchJunior Member

Not a real screenshot. Rigging weight is included, thanks for the comments. Will improve the graphics in the next version.

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