*THE HULL TRUTH is the world's largest FREE network for the discussion of Boating & Fishing. Whether you're researching a new boat, or are a seasoned Captain, you'll find The Hull Truth Boating & Fishing Message Forum contains a wealth of information from Boaters and Sportfishermen around the world.
Welcome to the updated THT!
If you are having trouble signing in, please email feedback@thehulltruth.com with your username and we will help you. We thank you for your patience as we help you access the new site!
Random Quote: If you don't know where you'e going, any road will take you there.
Does anyone regularly use a 25'-27' long, wide beam (9'6"-10'), 10deg.-12deg. deadrise boat offshore? I'm seriously looking at a custom center console boat with this configuration and know my speed will be limited in seas, but like the open wide deck. I plan to use boat inshore and offshore up to 30-40 miles weather permitting. Boat is relatively heavy for open configuration (7,500-8,000lbs.+ wet).
Sounds like you are looking like a New England lobsterboat styled hull. They know how to build boats for heavy weather up there. Some are soft, some are hard chined. The hard chined will be less tender at rest & be a bit quicker however the soft chined variety will have an easier motion in a sea underway.
Neither one will be a speed rocket. There is a Seaway 27 here, single diesel, that turns a good speed. He can maintain that speed in a sea that will either slow the rockets down, the sensible thing to do, or test the strength of the occupants guts as they pound from wave to wave.
Cheasapeake deadrise styled hulls are also worth a look. Most are very fine at entry flattening out to very little deadrise aft. These hulls are easy to move & carry heavy loads easily.
Sounds like you are well aware that both the width of the boat and the low deadrise would tend to decrease comfort in a head sea.
Agree with Doug though - if these are Downeast style hulls, they have a fine entry, and are designed as either a semi-displacement or low speed planing hull. When running into a headsea at these lower speeds, the waves are striking the boat well forward, and so transom deadrise is of little consequence for ride, and the low figure gives good lift and efficiency. In Downeast hulls, a radiused bilge version will ride somewhat smoother at the expense of some lift. A true Downeast hull cannot be efficiently or stably pushed at high speeds, however, so not something one should expect to run at 40 knots.
__________________ When blithe to argument I come, Though armed with facts and merry; May Providence protect me from, The Fool as adversary. Whose mind to him a kingdom is, Where reason lacks dominion; Who calls conviction prejudice, and prejudice opinion.... ;-)
The pre-sv2 Grady Sailfish 25 has a 19 degree deadrise with a 9'6" beam. I take mine out 30+ miles, weather permitting, and plan some middlegrounds trips (80+ miles) later this spring.
The pre-sv2 Grady Sailfish 25 has a 19 degree deadrise with a 9'6" beam. I take mine out 30+ miles, weather permitting, and plan some middlegrounds trips (80+ miles) later this spring.
Roothawg-
I agree with the other comments here...However if you could tell us more details about this boat, ie, make, model, year, engine config, etc... I think you may get even more useful comments...DETAILS??
Boat would be new and very simliar to hull shape of Parker 25 Special Edition, Privateer 26 Wanchese, and the like. I haven't decided on engine configuration if I go this way (may use twin 135's or 150's).
I have a 22.2 Aquasport mod vee. The trick is not being in a hurry (don't fly the hull) and keep the bow down. Don't get something that doesn't have nice flare to the bow. When you get to where you're going toss the anchor enjoy less roll than the deep vee crowd and burn less fuel doing it.
How about a used 27 Whaler. They do not have a lot of deadrise and are very heavy. I am not sure of used prices, I am sure they are high but the whalers are solid well made boats.
30 to 40 miles offshore makes for a very long and wet ride with the wrong hull. I should say, wrong ,for this application, hull.
You did not indicate where the deadrise of 10 to 12 deg is taken at. I am assuming is at the transom. The variance ,or lack of, in deadrise together with the length of the hull and the deadrise at the forward entry determine how much pounding the hull will subject the operator to. Some of the Carolina customs start with a steep forward entry (about 60 deg) and end up at a flatter deadrise at the transom. Most of these hulls are best at the length of minimum 40 ft. I know of only one Carolina custom (Calyber) at 25' with 11 deg deadrise at the transom and 60 deg forward entry. The builder swears the ride is soft. I can not vouch for this as I have not experienced it. There is also a Virginia custom builder (Tides) who makes a hull with 9 deg dearise at the transom that follows your parameters of length and beam.
If you do not plan to go with the high end custom variety, then convential wisdom has it, that you will be better served with a modified vee hull. I say modified (about 18-20 deg at transom) and not deep vee (22-24 deg at transom) because of your requirement for wide beam, 25-27' length and inshore use. I suggest modified as the compromise for all of these conditions. It will not excell in stability when drifting or lack of pounding running against head seas but it will give you a good overall performance especially if you pick your days. IMO the 10 to 12 deg deadrise on a middle-of -the- run boat should not be considered at all if 30 to 40 mile offshore runs are in the program unless you want to make your dentist happy!
Low Deadrise 25'-27' Wide Boat Offshore ? 
</img> 
