mcarthur
Senior Member
- Joined
- May 9, 2018
- Messages
- 307
- Location
- Australia
- Vessel Name
- Blu Emu
- Vessel Make
- Ligure 50' aluminium power catamaran
What I've done in the background to the blog post is collect as much data on consumption for powercats that I can. I have pretty good data for:
- PDQ 34
- Highland 35
- MY37
- Aspen 120
- Leopard 43
- Summerland 40
- MY44
- Leopard 53
- Aquila 32
- Aquila 44
- Aquila 45
- Aquila 48
- Powerplay 56
- Sunreef 70
- Horizon 52
- Africat 42
The rest is only barely enough quality and quantity to use for comparisons.
With enough data, I've fitted a consumption polynomial so can work out for most common speeds what the consumption will be (ignoring wind, wave, over-and-under weight, etc.).
For the Horizon 52 - if that's the one - 9.5kn is reported to use 2.6lpnm (9.7gph), so your friend's 8gph is 20% under or about 2.1lpnm.
To compare similar sized boats:
- Powerplay 56 is 3.2lpnm
- Aquila 48 with 370's is 3.2lpnm
- Tennant cat Catbyrd is 1.2lpnm
- Leopard 53 is 1.7lpnm
- Cumberland 47 with 300's is 1.6lpnm
- Tennant Domino is 1.9lpnm
So the Horizon 52 is in the middle at that speed in my list. Not too bad given her displacement is about 27 tonne.
- PDQ 34
- Highland 35
- MY37
- Aspen 120
- Leopard 43
- Summerland 40
- MY44
- Leopard 53
- Aquila 32
- Aquila 44
- Aquila 45
- Aquila 48
- Powerplay 56
- Sunreef 70
- Horizon 52
- Africat 42
The rest is only barely enough quality and quantity to use for comparisons.
With enough data, I've fitted a consumption polynomial so can work out for most common speeds what the consumption will be (ignoring wind, wave, over-and-under weight, etc.).
For the Horizon 52 - if that's the one - 9.5kn is reported to use 2.6lpnm (9.7gph), so your friend's 8gph is 20% under or about 2.1lpnm.
To compare similar sized boats:
- Powerplay 56 is 3.2lpnm
- Aquila 48 with 370's is 3.2lpnm
- Tennant cat Catbyrd is 1.2lpnm
- Leopard 53 is 1.7lpnm
- Cumberland 47 with 300's is 1.6lpnm
- Tennant Domino is 1.9lpnm
So the Horizon 52 is in the middle at that speed in my list. Not too bad given her displacement is about 27 tonne.
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