B60 performance with 3412’s

Of course not! Broker wants his local guy to do it. Same guy who did all Viking / Ocean props before veem came into the picture :-/

It's been a frustrating and emotional roller coaster to this point. Now we wait for next Friday. We either accept the project or we reject it at this point.

was not FT on boat. As needed and for maintenance.

2-4’s offshore, ran both ways up and down beach. Was in knots, I do have video. Captain didn’t try to sell anything and it didn’t feel like any struggle; planed as expected. Ride quality was good, as she’s a 90K lb 60’ SF with a pretty nice v-hull. Just felt a bit sluggish in terms of what we experienced with cruise speed / load and WOT speed when compared to buddy’s boat and published specs. Boat should be able to cruise 28-32kn (if desired) and lightly loaded should hit ~37 on the pins.

Our current B50 runs 28-30 and I hit 36.5kn yesterday doing a brief WOT run. For example, the Bertram 50 hull comes alive and performs very nicely above 26knots and I really don’t want to go back to cruising ~25 (unless it’s by choice to pull the sticks back). Part of our performance gains on the Bertram 50 came from repower weight reduction, the increased HP from 735 to 1000 and swinging 5 blade veems - which seem to provide much needed stern lift (she now prefers no tab).

To me, the 60 just seems to feel better running closer to 30kn if you can stomach the fuel burn - - but I do hear the 60’s like some tab. We swap props and re-run her Friday. Lift scale supposedly also being repaired (fingers crossed), otherwise next closest yard is ~ 20nm…

Reporting back in. Happy to have attained the speeds expected although still slightly under propped with WOT loads variating between 94-97% Max. Cruise load 1850rpm ~60% @ 28-28.5kn… 2050rpm ~72-74% @ solid 32kn. No tab.

Very pleased. Some additional tuning could yield some additional performance, but I’d like to see us properly load the boat with gear and maybe a tender on the foredeck first. I could play with the tabs a bit more, too.

Yes, she is enjoying her new home tonight. Ran great. Spa treatments start tomorrow!

Closing the loop. Finally into day 3 of our maiden cruise and couldn’t be more pleased with the boat and performance. We spent 3 solid months virtually 7 days a week working on her before we ran out of time with winter weather. Never spent the night aboard or traveled more than 3 miles from the slip during this time.

With motor services now up to date along with completely new bottom job & cutlass’, she’s turning good speeds, loads and fuel burn. Very impressed. The B60 hull is very confidence inspiring for the coastal cruising we do; we left Black Friday in the face of a not-so-favorable forecast for day 1 in the Mid-Atlantic.

Prior to departure, with full fuel / water / extra tools and provisions she hit ~2330+/- @ 36kn. Load was something like 95 or 96%.

With 1/2 fuel, full water and 5 people yesterday I noted 32.5-33kn @ 2100 @ 75% load. 30/31kn @ 55% load @ 1900 burning 86/hr. 28kn @ 55% 1800. 26kn @50% 1700 and 66gph.

I still need to break out a note pad and go through all the numbers for the prop shop but I’m thinking new Veems might be on my Christmas list - - just maybe I’ll have them by Spring. Based upon my experience tuning our 50 after the repower, I’m thinking there’s some room to work with the wheels a bit. Also noticing a bit of bow rail vibration at certain rpm, so will do engine alignment and pull shafts to inspect / replace if necessary. Those 5 blade Veem interceptors sure were smooth right out of the box!