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Pequod Sportfisherman

Discussion in 'Technical Discussion' started by Roger C. Therie, Jun 3, 2007.

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  1. Roger C. Therie

    Roger C. Therie New Member

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    Jun 3, 2007
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    Location:
    Wickford R.I.
    I own a 1973 pequod 34.5 ft in length 12ft Breadth 7.0 ft depth. I have a problem with the boat yawing when I reach approximately 18 knots. I would appreciate any help or information that would help rectify this problem.

    Thanks,

    Roger
  2. CaptTom

    CaptTom Senior Member

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    Roger,
    Welcome to the forum. We could use a little more info on the problem, as in do you have trim tabs and if so, are they up or down when you have this problem? Also, are you running into or have a following sea when this happens, or both? Have you redistributed weight in the boat, as in moved a water or fuel tank, extra supplies or gear, etc. Has this happened for a while or started recently, perhaps after some other change?
    Many experienced folks on this forum, so I'm sure you'll get some help.
  3. SeaEric

    SeaEric YF Historian

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    The 34 Pequod is a wonderful boat. They ride nicely and have great lines. The standard power was most likely the 318ci Chrysler, rated at 225 to 240 HP or thereabouts. I'm guessing that perhaps your boat has been repowered with larger horsepower if she is making 18 knots. As suggested, tab position is probably important. Some of the older traditionally designed boats just don't do well when pushed to higher speeds. I have a friend with an older 36 Hatt that he has repowered with larger engines. He reports that she gets a little squirrely at the top end. Perhaps she wants to run at 16 and not 18?
  4. Jeff G

    Jeff G New Member

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    Feb 3, 2008
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    Location:
    Annapolis, MD
    Not very timely but...I have a '76 Pequod and I cruise at 17-18 knots running my 318's at 3200. She'll make 22 flat out - these are GPS numbers. The first year I had her ('99) I ran at 2600, making about 13-14 for economy as the secondaries open at 2750. She was badly behaved at this speed, very physically hard to steer, wouldn't track and would veer off in the slightest sea. The condition was agrivated by putting in any tab. I discovered in making a passage from Annapolis to Philadelphia (trying to outrun a cold front) that running her up to 3000 gave me 16-17 knots, easy steering and good behavior. When I ran the numbers, my GPH went from 15 to 20 but my MPG was about the same - just shy of 1.

    I have found that in following seas, she runs better at higher speeds with no tab. The tabs are good for flat water giving a little speed boost so you can run maybe 100 rpm slower for equivalent speed. I have some theories but I'm no naval arc.

    Jeff

    PS there's another forum for Pequods: http://www.yachtforums.com/forums/n...e-calypso-pequod-yachts.html?highlight=pequod
  5. Seaeagle

    Seaeagle New Member

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    Aug 31, 2008
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    Location:
    We currently hail from the Northern California Del
    78 35' Pequod

    I am new to this forum but what I have seen so far i'm glad I stummbled on this site, I 've been searching for Info on the Pequod since I started looking at this boat to purchase. These forums have giveen me plenty of information as well as making a little more comfortable about my purchase. Thank you to everyone who post on this site.
  6. Seaeagle

    Seaeagle New Member

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    We currently hail from the Northern California Del
    pequod charging system/ water pressure ?

    I've been trying to learn about my 78 Pequod with out a manual. The owner is no help. I have figured out most of the functions. The boat has been sitting for 4 yrs. engines have been ran but boat never moved out of the slip. batteries were disconnected and arent strong enough to start one of the engines. Is there a charging system in the system? I think I have found the fresh water filler and the pressure inlet has no tube/hose connected to it. I cant get any water pressure. Helpppp?
  7. NYCAP123

    NYCAP123 Senior Member

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    First, going back to the first post: did anybody find a 7' draft on a 34' boat a little strange. Like maybe she's sunk in 4' of water.
    Second, Although I'm not familiar with this model boat (and I assume the 78 refers to the year), if there is a charger it would be mounted on a bulkhead. However even if there is a charger it's bound to NOT be a smart charger so it will probably cook the batteries if it works at all. Your best bet is to pick up a regular auto charger for now to get things working although 4 year old batteries in a boat that's been sitting are bound to be no good. In fact I'd probably skip the charger altogether and just go for the new batteries. Once started the alternator should keep them charged.
    Third, if this boat has been sitting in its slip for the past 4 years you best take a swim because I suspect she's going no place.
    Fourth, when you refer to the fresh water fill I assume you're talking about the boats fresh water system (not the motors cooling system). Is there a tank or just a shore water connection. In either case if the hoses are disconnected it's because the system leaked. You're looking at replacing the entire system. Remember, more boats sink from dockside water than salt water.
  8. Pequod

    Pequod New Member

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    Jun 10, 2009
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    Props

    Jeff, have you been able to find out what size props you have? I am getting about 15-16 mph at 2900-3000 RPM. Not as fast as I would like. I know they propped these from the factory so it would not hit max RPM. I am not sure that translates into better fuel burn, but it is not good for the engines.
  9. PacBlue

    PacBlue Senior Member

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    I believe the DEPTH was stated as 7.0 feet, which should be the measurement from the Keel to the Deck @ Side taken approximately at amidships.

    There was no DRAFT information provided........
  10. NYCAP123

    NYCAP123 Senior Member

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    Wow, old thread. I have never heard of that measurement given for a boat, I've heard LWL, LOA, Beam, Draft, clearance (waterline to highest point or keel to highest point when on land), freeboard, deadrise, even width at transom, but never depth referring to the distance from the keel to the deck. Except in the build process, what relevance would that have? It's a number that would change virtually every inch from bow to stern on most boats, especially on a SF where that number at midship would have almost no relevance at all. Plus, you could theoretically have 7' depth and 6" of freeboard.
  11. PacBlue

    PacBlue Senior Member

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    Yes, it is not a very useful measurement for a pleasure craft, especially since the Depth typically varies along the length of the boat, especially when you have a cockpit. The relevance is greater in larger commercial ships like tankers, etc., although you will find it on various pleasure craft registration, insurance and Coast Guard documentation forms.

    The common problem expierenced by these owners of the Pequod Sportfisherman is that they are operating the boat right before the "hump speed' where it is not fully planing. Your fuel consumption/efficiency drop, and the handling is basically lousy. If the vessel has enough reserve power to get 'over the hump", they will find a benefit in speed/fuel efficiency/handling, as long as the seas are not significant enough to induce pounding. Small sportfishers do not make very good semi-displacement boats unless they are trolling!

    Just my $0.02........
  12. CODOG

    CODOG Senior Member

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    The measurement of 'Depth' most likely has its roots in the days when cargo carrying / hold capacity began to become an accepted way to classify / insure / levy a tax on a commercial vessel....like so many of todays varied ways of measuring a yacht or ships particulars and tonnage.
    I see it used mainly in export paperwork. Depth - from deck at side to keel @ midships, is, along with length and breadth of hull, a dimension that has to be stated on the import certification form for a Euro built boat being exported to the States for example. In this context it isn't that controversial...it's just a statement of a fact, a simple measurement that has no real meaning to a pleasure boat buyer, nor any implications as to a vessels ability to stay afloat and move forwards in an elegant fashion.
    'Least Moulded Depth' on the other hand, is a multi-layered hot-bed of intrigue in the context of classification.
  13. NYCAP123

    NYCAP123 Senior Member

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    I'm learning something new here. DK when I'll ever use it unless I'm called to be a contestant on Jeopardy, but thanks for the education.
  14. Marmot

    Marmot Senior Member

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    It has a great deal of relevance to anyone who wants to document a vessel, pay canal feels, or avoid running aground on the regulatory shoals that surround every coastline. It is not an old, dead, historical artifact.


    http://www.moorsom.com/download/TG_4_CH-0.pdf

    http://www.uscg.mil/hq/msc/docs/CG-5397_Rev_6-04_v1_0b.pdf
  15. Capt J

    Capt J Senior Member

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    Look on the Documentation sheet of any documented vessel and the depth is on the paper/
  16. Robin K

    Robin K New Member

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    Location:
    Québec City, Québec, Canada
    Gentlemen....Considering acquiring a 74 Pequod Sedan ....what is the construction of the decks ? Cored with balsa or solid fiberglass?

    Thank you !


    Robin K

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