what's name of this construction？

Hello guys：

there is a Ro-ro passenger，it has two propellers，the structure around the propeller is not casting parts，Part of the propeller shaft is located in the outer hull，Contain this part of the propeller shaft structure is called what？

 

Do you have photos or diagrams?

 

A wild guess but this sounds like a 'propeller shaft bossing'. Post a photo or sketch and someone can help.

 

Strut ?

 

I think he's referring to something like this (but not on a submarine) where the prop shaft exits the hull with no struts, no shaft logs etc. I think he wants to know what the prop shaft supporting/bearing/water sealing apparatus would be called in a description on a plan of a ship.

 

This was my interpretation of the Kalvens question. Years ago I was working in a shipyard on a 325' ro-ro ferry. I helped (briefly) the loftsman layout the plating rolling and forming templates for the shaft bossing.... quite a challenge.

 

You're right.

http://www.ss-united-states.com/a1/cou-e1.html

 

jsl: thank you for you raply, yeah~ it was this that i asked, quite right, it is shaft bossing.