Temperature in cabin on 80F day

rocklobster

Well-known member
Joined
Oct 8, 2017
Messages
102
Fluid Motion Model
R-21 EC
Hello,
One concern my wife and I have with purchasing a R27 is that it will be unbearably hot inside the cabin during a 80F on a cloudless day. Assuming I don't run AC, how hot does a cabin get with all the window fully open when you are:

At anchor?
Cruising?

We had a 33 Searay Sundancer and even though the cockpit wasn't fully enclosed (only three sided, stern was open), it got very hot in there. That boat only had one small 8" x 24" window in the windshield.

I'd love to know what you experienced with your rangers?

Thanks!
Joe
 
We bring our boat to Rhode Island in the summers and do quite a bit of cruising in the area. We have an R-27 with AC. You need the AC at the dock more than you will need it while cruising or anchoring out. We have never used the AC while cruising or at anchor since we do not have a genset. You usually don't miss something you don't have. There are a few hot nights, but we have a fan in the v-berth and it works well. Being able to open all the windows and hatches provides fine ventilation. At the dock is a differnt story. The wind is not always blowing to give you optimal air flow. You can always have AC installed after market for a fairly reasonable price. I have seen numbers at around $6,000 for the R-27. So try it without the AC and you can always add it later on.
 
I am also in RI with a 25SC, I agree with Knotflying. I have a genset and have only used the A/C once while underway, that was when the boat was new to us and just trying things out. Are you looking at the 27 classic with a diesel or the new version with the outboard?
 
I also agree that when underway I find no need for AC. However, when in no wake zones or at the dock my C28 can turn into an oven in a hurry! Of course, it doesn't take much for this big guy to start sweating! :lol:

Even on those 85-90F days at the dock the AC feels like it struggles to get the cabin cooled down. If I'm sat right in front of the air vent it's definitely very cold air, but overall it can't seem to cool everything down. It's almost like there is no insulation in the ceiling and it just soaks up tons of heat. I made thick pads using many folded over paper towels for all of the window hatches in an attempt to block out some sun which helped a little, but not much. My next thought was to try some sort of sun/heat reflecting pad and see if that works any better.

Anyone else experience the same?
 
We installed Oceanaire Shades on all the overhead hatches this past summer. They make a big difference!!
 
Barry Cohen":suo4innx said:
We installed Oceanaire Shades on all the overhead hatches this past summer. They make a big difference!!

That's good to hear! Which ones did you go with and do you have any pictures? If you don't mind my asking, what kind of cost did you have in that? Thanks.
 
Chesapeake Bay is a sauna on most days during the summer. 90+ degrees and 98% humidity make for a miserable environment. A long as the sun is blocked from entering the cabin, the factory A/C does a fabulous job of cooling down our C30 while at the dock. We use the factory curtains on the side windows, factory canvas on front and back windows and some homemade shades (placemats actually) for the overhead hatches. A couple of strategically placed 12v fans help also.

We also quite frequently run the generator and A/C while underway. We do it, obviously, to keep things cool on those blistering hot and humid mid-Atlantic days. An added benefit, however, is how much quieter the boat is while running at cruising speed (14-18 knots) with all the doors, windows and hatches closed. It makes for a more soothing and restful ride. To date (knock wood) we have not had any problems running the genny at speed.
 
We had an R27 and never ran the air while under way. We did however take the two overhead hatches, above the helm and passenger seat our and turn them so they opened facing the bow. Doing this help air flow while under way as well as at anchor. We also bought some Marine Vinyl from Joann Fabrics. We cut this to fit between the hatch glass and the inside hatch screens, thereby eliminating sun from entering from overhead....this helps whether you are using AC or not.

Jim F
 
trailertrawlerkismet":37czyiki said:
We had an R27 and never ran the air while under way. We did however take the two overhead hatches, above the helm and passenger seat our and turn them so they opened facing the bow. Doing this help air flow while under way as well as at anchor.

Jim F

Our Cutwater has a lower profile, hence a lower cabin top, than a Tug. It of course depends upon speed, seas and heading, but we often take a lot of water over the bow that splashes onto the roof. If a hatch were open we’d be inundated...ergo, A/C while underway.
 
We have used the AC underway in our R27 classic. When cruising with the breeze you are basically in dead air, the AC is really nice on those hot humid days. The other scenario is rougher conditions where water is splashing into the overhead hatches and we need to keep everything shut.

When at anchor and windows open it has never been uncomfortably warm on Narragansett Bay. We made sun screens for the overhead hatches by cutting a car windshield sun screen. They just lay on top of the screens. These help significantly.

Howard
 
Barry Cohen":1q01klkc said:
We installed Oceanaire Shades on all the overhead hatches this past summer. They make a big difference!!

I'd be very interested in specific details and pics also. Can you please post here or PM me? Thanks.

Todd
 
I should be on the boat Sunday. Will take a few pics.

We used the Skyshade Hatchshades. Would have preferred the Skyscreens, but they proved to be cost prohibitive and an installation challenge.

Regardless, not cheap. But we love them!

http://www.oceanair.co.uk/marine/produc ... hatchshade
 
Boatagain":2kxlvgrx said:
Chesapeake Bay is a sauna on most days during the summer. 90+ degrees and 98% humidity make for a miserable environment.

W boated for 20 years on the Bay, first 10 years we sweated until we bought a piece of waterfront with a dock, a small house and a hammock in the trees. Second 10 years the boat was for primarily day use and for me alone overnight in Spring and Fall. at 40mph cruise you make your own breeze.

Memories!

I feel your pain.
 
Chimo":2etoz5om said:
Boatagain":2etoz5om said:
Chesapeake Bay is a sauna on most days during the summer. 90+ degrees and 98% humidity make for a miserable environment.

W boated for 20 years on the Bay, first 10 years we sweated until we bought a piece of waterfront with a dock, a small house and a hammock in the trees. Second 10 years the boat was for primarily day use and for me alone overnight in Spring and Fall. at 40mph cruise you make your own breeze.

Memories!

I feel your pain.

In defense of my Bay 😉, the flip side is the beauty of the spring and fall seasons. These past few weeks the weather has been quite spectacular. I was out yesterday in 70 degrees, gentle breezes and thoroughly enjoying the annual color changes along the shore. Visibility was amazing too. Lower sun angle makes for some incredible sparkling reflections off the water. Did I mention that it was beautiful!? No A/C on a day like that! 🙂

Spent the previous night on board with temps dipping into the 30’s. The reverse-cycle heat was perfect.
 
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