Determining dead rise for a boat

[Old Ironmaker]

I don't have a specification manual for my 1995 StarCraft Superfisherman 190. The only specs I have found for it are here on iboats.com, that's actually how I found this site originally. I read about dead rise going from say "X" at the bow and going down to "Y" at the stern. How would one determine or measure dead rise on any given vessel? Thanks ahead of time.

 

[tpenfield]

Usually measured at the stern since there is so much variation in transitioning from the bow section to the running surface further aft among different brands/models of boats.

Some boat companies talk about the dead rise angle towards the bow, but since all of them don't it is hard to compare

 

[SeaDooSam]

I used a phone app. I layed my phone level on the transom and the app read zero degrees. Then I turned it to match the V of the hull and it said 19 on my boat so that told me my method was pretty accurate. Do you have a smartphone?

 

[hemi rt]

Up here in Canada dead rise is measured at the transom, in fact if you have more than 20" of dead rise you need a boarding ladder. A few people have been fined for not having a ladder an less than 20" of dead rise - all of those tickets were cancelled by the courts.

 

[H20Rat]

Up here in Canada dead rise is measured at the transom, in fact if you have more than 20" of dead rise you need a boarding ladder. A few people have been fined for not having a ladder an less than 20" of dead rise - all of those tickets were cancelled by the courts.

You might be thinking freeboard, not deadrise. Freeboard is easy to measure though!

https://www.tc.gc.ca/eng/marinesafet...-515-4377.html

 

[Watermann]

There seems to be a few different deadrise measurements to consider.

 

[hemi rt]

You might be thinking freeboard, not deadrise. Freeboard is easy to measure though!

https://www.tc.gc.ca/eng/marinesafet...-515-4377.html

Yup - had a brain fart.

 

[rallyart]

Good chart from Waterman. Ignore the lifting strakes when you measure the deadrise. Most often it's measured at the transom. Some with flat bottoms measure it at the bow to make you think they can handle rough water, but it's not the same.

 

[Old Ironmaker]

Great chart, same as roofing pitch basically. Would you have a dead rise number at the transom and a number at the bow? Someone that wants to buy my boat asked me what the dead rise was, I had no clue. Thanks again.

 

[SkiDad]

I used a phone app. I layed my phone level on the transom and the app read zero degrees. Then I turned it to match the V of the hull and it said 19 on my boat so that told me my method was pretty accurate. Do you have a smartphone?

Hi there, what smart phone app is that ?

thanks!

 

[southkogs]

I've got one called "Handyman" for iOS. Clever little app for checking things out quickly.

 

[SeaDooSam]

Hi there, what smart phone app is that ?

thanks!

I believe I used Angle Pro for iPhone. It worked good. I just put the phone flat up against the V of the transom until the angle of the phone matched that of the V of the boat.

Angle Pro by 5fuf5
https://appsto.re/us/0trUS.i