Jump to content
Game-Labs Forum

Swedish Ship Collection, af Chapman (With Plans)


Recommended Posts

  • 4 weeks later...

20-gun Privateer, Architectura Navalis Mercatoria Plate XXXVI

 

lcncaMI.jpg

 

(slightly edited by yours truely)

 

 

Dimensions (imperial)

 

length P/P:                            116' 7''

breadth:                                  30' 7''

draught aft:                             14' 3''

 

length-to-breadth ratio:            3,8

 

 

Armament:

 

20 6-pounders

32 3-pounders

2 4-pounder bow chasers

 

Crew:

 

220

 

 

Probably my favourite plan in the ANM, because this is exactly the type of vessel I like the most, small, fast and packs quite a punch. And it shows very innovative features for the time the draught was made (early 1760s) like a flush deck and the diagonal bracing.

  • Like 1
Link to comment
Share on other sites

Its looks like a good privateer

 

 

Well, you find the plan for this ship in the 'Privateer' chapter of the Architectura Navalis :P

 

As a bonus, it has one hell of a nice hull shape:

 

4GHj7cb.jpg

 

Don´t mind the square bow, I was just curious how the plan would look like in 3D, so this just a quick and dirty model I made yesterday.

 

Theoretically, the 32 3-pounders could be omitted and the 20 6-pounders could be upgraded to 8-pounders (with 1430 pounds to spare). Now that would be a nice and powerfull privateer.

Link to comment
Share on other sites

20 9 pounders sounds great especially with bow chasers. I'd throw a recommendation on it in next years voting just because I love baby frigates. ;)

 

Though I do wonder if it will be speedy enough and not rather sluggish like the snow.

  • Like 1
Link to comment
Share on other sites

  • 2 weeks later...
  • 3 weeks later...
  • 2 weeks later...

so I am getting closer to beeing finished.

The outside is done but the gunport lids which I will do somethime later this week.

http://imgur.com/a/fliPa

http://imgur.com/99UC14P

 

The colourschemeis now according to the ship model here

If not, please tell me :)

 

edit:

http://imgur.com/6RL6iRT

 

edit edit:

http://imgur.com/a/W6wLE

 

http://imgur.com/R904Ifu

  • Like 2
Link to comment
Share on other sites

all right.

after months of work, a metric arse ton of work into my first ever 99% ready model here she is:

https://skfb.ly/Pn9W

please ignore the glitch in her stern gallery as well as on her stern gunports.

Those come from the upload page.

 

99... where is the 1%? the helm is missing. And maybe I make a rudementary stove. who knows..

 

edit: apparently each gunport of the upper gundeck is glitched.

  • Like 4
Link to comment
Share on other sites

The screen is pitch black and flashes a purple silhouette of the ship when I change the view around. o.o

What browser did you use? on Firefox i had your issue however on chrome it is perfectly fine, and i really like the model bungee, looks nice :D

Link to comment
Share on other sites

  • 3 weeks later...

Never noticed the three points on Chapman´s late work. The bottom point is B/Center of Buoyancy, the other two points should be the metacenters for different load waterlines (cf. Plate XXI, Fig. 5, ANM)

Are you sure? Why would the middle point be a different size if it was just another metacenter?

 

That book on Chapman that you recommended has the answer to this question, but I returned it to the library.

 

If both upper dots are metacenters, isn't it more likely that they are for different angles of heel? The difference between them seems extreme.

Link to comment
Share on other sites

Hang on a minute, because I thought I understood the whole metacentre concept.

 

When you aren't heeling, there is no metacentre at all because there is no righting arm. So when Chapman rights that a privateer should have a metacentric height of 6 feet, he must be envisioning a specific angle of heel. How do we know what that angle is on his plans?

Link to comment
Share on other sites

When you aren't heeling, there is no metacentre at all because there is no righting arm. So when Chapman rights that a privateer should have a metacentric height of 6 feet, he must be envisioning a specific angle of heel. How do we know what that angle is on his plans?

 

 

That´s the stuff that´s in his Treatise. All metacenter calculations are for a 3° heel, if I remember correctly.

Link to comment
Share on other sites

Huh. That information doesn't seem like it would be very relevant from a stability standpoint. Maybe for gunnery.

Wait a minute, I see my mistake.

 

I was inclining vessels in my head and convinced myself that the metacenter would be different at various heel angles. But it isn't.

 

http://www.cruisingonstrider.us/Metacenter.htm

 

Mental geometry is hard.

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

 Share

×
×
  • Create New...