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  Topic Review (Newest First)
1 Week Ago 08:05 AM
TomMaine
Re: Tartan 37 centreboard

Quote:
Originally Posted by bmeow@verizon.net View Post
I sailed my Tartan to Bermuda and back and forgot to put the centerboard down. I am thinking about
drilling a hole through the keel and centerboard and installing a bolt to hold it up. Does anybody have
advice on this move?
I sure wouldn't do it. I've had people tell me they can't see the difference between board up and board down on sister ships of mine.

That's because you can't 'see' the difference looking at the water. Leeway doesn't 'feel' different in small degrees. You might see a difference in the wake of a boat that has more leeway and is 'crabbing' through the water.

But you can track the difference simply, on a GPS chart plotter. Next time you're sailing close hauled, check your COG. Then lower your board, and after a bit, check the COG again.

You'll see various changes, sometimes not at all due to current, wind, un-known factors. But more often than not, you'll be able to see an improvement in your windward course that may run around 5 degrees to as much as 10 degrees.

The change in course to windward is due to the lift provided by the centerboard. Off the wind, it doesn't provide lift(which is why it may clunk going downwind).

If those course improvements don't mean anything, then pin the board up. I find that course improvement often means the difference between making a headland on the same tack, and tacking.

And then if we're sailing a distance overnight, that course could make a difference in time, location, etc. If you avoid windward sailing all together, then definitely pin it up (in that case, I'd remove it).
1 Week Ago 07:47 PM
roverhi
Re: Tartan 37 centreboard

The PHRF ratings are for three very different boats. The Mark I was a Ted Hood keel/center board CCA design, the Mark II an S&S IOR boat designed as a keel/center boarder with a few built with deep keel, the Mark III was their in house cruising optimized design that could be had with with a deep or Scheel keel.

Wouldn't be too concerned with windward ability for cruising. Unless you are primarily doing coastal sailing, often hard on the wind, the pointing ability won't be an issue. For longer ocean passages, pointing ability is almost a non issue. First, because you will almost certainly design your route to avoid going to windward. Second, beating into wind and waves gets really really really painful for more than a few hours. Doing it for days on end can be cruise ending. FWIW, believe the first T-37 II to circumnavigate removed the center board before they left.

Quote:
Originally Posted by JimsCAL View Post
Here's the data cut and pasted from the national PHRF database. Numbers are low, high and average ratings based on data from the different regions. Could be your region has a reason to rate the two versions differently. Later 37s do show differences based on the keel.

TARTAN 37-1 168 174 171
TARTAN 37-1 CB 168 177 171
TARTAN 37-2 126 150 132
TARTAN 37-2 K 126 129 126
TARTAN 37-2 SD 126 141 129
TARTAN 37-3 129 129 129
TARTAN 37-3 SCHEEL 117 132 123
TARTAN 37-3 SD 114 141 126
1 Week Ago 02:23 PM
bmeow@verizon.net
Re: Tartan 37 centreboard

I sailed my Tartan to Bermuda and back and forgot to put the centerboard down. I am thinking about
drilling a hole through the keel and centerboard and installing a bolt to hold it up. Does anybody have
advice on this move?
11-27-2009 02:32 PM
Blackwatch
addendum to Soclare

Soclare makes very good replies about the Tartan models, but it should respectfully be pointed out that the Blackwatch 37s were hull nos. 1-15, produced from 1965 to mid 1968. Hull numbers 16-32 were also produced, as Soclare correctly notes, and these were named the Tartan Classics, 1968 to 1970, when the factory burned down. On the Classic, the head was moved forward and portside, a change in the kitchen area and also available with a centerboard, as well as having a straight coach house, whereas the Blackwatch was only offered in a full keel. More history on the Blackwatch boats can be found at Tartan Classic 37 Blackwatch History
11-22-2009 09:25 AM
T37SOLARE 37-1 was the Ted Hood designed Blackwatch, 1967-71 (32 built)

37-2 is the Sparkman & Stephens Classic, 1976-89 (486 built)

37-3 is the Tim Jackett designed 372, 1988-93 (60 built)

The Tartan 38 is the deep keel S&S 37 with a slightly taller rig. (54' vs 52')
11-22-2009 12:53 AM
wannabe4 Thanks Jimscal.

Can anyone explain why there is such a difference in the ratings between the T 37-1, T 37-2 and T37-3?

What year[s] was the T 37-1 manufactured? T37-2? T37-3?

Thanks...........
11-13-2009 10:49 AM
T37SOLARE A few of the last boats produced had Scheel keels. About 10% were deep keels, they are sometimes referred to as a T-38.
11-13-2009 10:41 AM
JimsCAL
Quote:
Originally Posted by T37SOLARE View Post
FWIW, the T37-1 is the Blackwatch model, 37-2 is the S&S classic and the 37-3 is the jacket designed 372.[/IMG]
Thanks for the clarification. Looks like they have three versions listed for the T37C. I was only aware of the deep keel and Cb versions. Was there really a shoal keel version?
11-13-2009 12:19 AM
T37SOLARE
Quote:
Originally Posted by JimsCAL View Post
Here's the data cut and pasted from the national PHRF database. Numbers are low, high and average ratings based on data from the different regions. Could be your region has a reason to rate the two versions differently. Later 37s do show differences based on the keel.

TARTAN 37-1 168 174 171
TARTAN 37-1 CB 168 177 171
TARTAN 37-2 126 150 132
TARTAN 37-2 K 126 129 126
TARTAN 37-2 SD 126 141 129
TARTAN 37-3 129 129 129
TARTAN 37-3 SCHEEL 117 132 123
TARTAN 37-3 SD 114 141 126

FWIW, the T37-1 is the Blackwatch model, 37-2 is the S&S classic and the 37-3 is the jacket designed 372.

Quote:
1. How does the T 37 CB point compared to other cruisers such as Valiant 40? Tayana 37? Cal 39? Sabre 38[fixed keel]

2. Regarding leeway, is it minimal and of little or no concern? Or is it something that could make clawing off a lee shore more challenging?
The 37 will outpoint all but the Saber, but I'd only give it 2-3 degrees advantage.

Leeway IMO is not an issue on the T37C.

11-12-2009 10:07 AM
JimsCAL
Quote:
Originally Posted by sailing_fool View Post
Actually, the PHRF ratings are decidedly not the same. I own a T37 fixed keel (6' 7" draft) and can tell you that I must carry a lower PHRF than a CB boat.
Here's the data cut and pasted from the national PHRF database. Numbers are low, high and average ratings based on data from the different regions. Could be your region has a reason to rate the two versions differently. Later 37s do show differences based on the keel.

TARTAN 37-1 168 174 171
TARTAN 37-1 CB 168 177 171
TARTAN 37-2 126 150 132
TARTAN 37-2 K 126 129 126
TARTAN 37-2 SD 126 141 129
TARTAN 37-3 129 129 129
TARTAN 37-3 SCHEEL 117 132 123
TARTAN 37-3 SD 114 141 126
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