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Comments made by a surveyor set me off on a research project on fire suppression on boats. For background, I am a degreed Mechanical Engineer with several patents and have managed very large fleets of trucks and buses. I am also a pilot and a race car driver that is very familiar with fire...

Just purchased a 1984 Grand Banks 36 Classic Hull #698. Finished survey last week..surveyor verbally indicated no serious problems, told me boat was seaworthy and in good condition. Got a 32 page report with only 1 "A" Recommendation..flares expired, which I have corrected. There were 32 "B"...

Only time will tell how this mess plays out. No doubt that large segments of the economy are damaged and will take time to heal. No doubt there will be some almost permanent changes in human behavior. (And that may depend a great deal on new medicines.) No doubt, those that can are likely to...

A strength and weakness of humanity is our ability and preference for oversimplification of complicated scenarios. Inflation is a very complicated scenario. Supply and demand affect price in an economy with a fixed quantity of money and a fixed velocity of that money. But, prices are also...

I gave my hull number incorrectly...it is 698, so our boats are only 17 S/N's appart.

Perfect! Great idea! Thank you!!!

Here is a video: Lots of relative movement between boat and floating docks---and this is in a relatively "protected" area without much fetch.

Like these ????: TIDELINE A1 scotchman - Lure Light by Tideline Lures...

My boat is a single with bow thruster. Yes GB 36 has max beam of 12'6", but it tapers a bit and is just under 12' at "floating dock height" near stern. I suspect that lower rub rail at the stern is to protect it from pilings when the boat rocks/rolls in the slip..and since pilings sometimes are...

Good solution for upward boat motion..I also have concern that rail ( and fender) could get above float and catch on downward movement with heavy wave motion in a storm. Thinking about some form of vertical "fender board" long enough to always be lower (and higher) than float edge. Vertical...

As an economist, I always remind that "at the margin" is quite different than "on the average". The less popular boats in poor condition will fall dramatically. The popular boats in first class condition will probably hold up quite well. To sell a "marginal" boat will require a big price...

There are two competing forces..recession forces caused by unemployment and business losses, offset by inflation caused by the historically large monetary and fiscal stimulus. Hard to tell which force will win. My biggest fear is what is called stagflation....slow economy with high inflation...

Thanks, I will be asking questions as I go along. During sea trial, i was happy that engine met all expectations. Hit hull speed at about 1700-1800 rpm (depending on which tach)...about 10 knots max speed at 2300-2400 RPM..no smoke. So I think the original 24d x 14p is very well suited. I did...

Closing on 1984 GB36, Hull # 496 this week. Just completed survey. Single Lehman 120. Very nice condition. Looking forward to the 40 hour, 300 mile "maiden" voyage up the Chesapeake from Norfolk to north of Baltimore. Hiring captain for first leg to get oriented.

Plane is a 2007 Cubcrafters CC11-100 Sport Cub. 100 HP, 0-200 engine. Climbs at 1000 fpm, cruises at 100 mph. Has flaps and variable ailerons that eliminate adverse yaw. Toe brakes. Modern avionics..ADSB. Stall speed 32 mph. It is for sale if you know anybody that might be interested.

Predicting the market price of assets is impossible with any precision. There is just too many unknowns. One can only assess various probabilities to different possible scenarios. That said, prices of boats will depend a great deal on the make, model, type and year. There is a significant size...

Nomad Eric The ratio you are referring to is generally called "pitch ratio". Pitch/Diameter. So your 3:4 ratio that you refer to is 0.75 pitch ratio. I cannot find any source that indicates this is a magic or optimum figure. Generally, recommended pitch ratios depend on boat speed with...

Not sure where that comes from... 1000 shaft rpm with 1 in pitch and no slip is 1000 inches per minute...x60 is 60000 inches per hour..divided by 12 gives 5000 feet per hour..divided by 6076 feet per nm is 0.822 knots..so ROT...1000 shaft rpm no slip is close to 0.82 knots. 5000/5280 ft per st...

Thanks for pointing this out...accuracy or inaccuracy of the tach...and or the speed measurement instrument may account for all of the differences I am seeing. I will bet the prop is correct for the boat. The sweet spot for engine fuel economy is 1400-1800 RPM and one owner reports 1700 rpm at...

2.03:1

The Mich Wheel calc called for a 26 in dia with a 16" pitch. I think 24 in dia is largest possible for single screw. (I think twin screws can swing larger) Pretty sure GB picked the right diameter. So 24 d x 14 p seems reasonable...but insure what RPM is or should be equivalent to displacement...

I kinda agree...in my case, the boat came with the propeller it has now. I read that some change prop to get better fuel economy (more pitch) but then they have to be careful at full throttle not to overload engine. That is not my goal...I am trying to get a feel for what speed should be...

Thanks----appears the "Propeller Slip" is higher than 20% for "slower" boats. Sort of explains why anecdotal speeds required a bit higher RPM than I expected.

Seems there are two forms of prop "calculators". Victoria Propeller has a very good one..enter known specs and it gives you HP required for hull speed and maximum speed. The calculations are based on propeller size they choose, which I assume is their "optimum". Second method is more...

Fantastic blog..enjoyed much of it. Thank you! Looks like y'all having a great time!