BOATS

BOAT TESTS

Ranger Tugs R-31

By Capt. Bill Pike

CONDITIONS DURING BOAT TEST

Air temperature: 67°F; humidity: 80%; seas: calm; wind: variable, light

LOAD DURING BOAT TEST

170 gal. fuel, 70 gal. water; 4 persons, 1,000 lb. gear.

TEST BOAT SPECIFICATIONS

Transmission/Ratio: ZF63 w/1.97:1 ratio

Props: 19x22 4-blade NIBRAL Acme

The Numbers

Ranger Tugs R-31 - Final Boat Test Numbers:
RPM	KNOTS	GPH	RANGE	dB(A)
700	3.5	0.3	1,902	63
1000	4.6	0.7	1,057	60
1500	6.2	2.1	476	67
2000	7.5	4.2	288	71
2500	9.8	8.2	193	71
3000	14.0	11.1	205	76
3420	18.7	14.8	205	76
Speeds are two-way averages measured with Stalker radar gun. GPH taken via Volvo Penta display. Range based on 90% of advertised fuel capacity. Sound levels taken at the lower helm. 65 dB(A) is the level of normal conversation.

OPTIONAL EQUIPMENT ON TEST BOAT

NOTEWORTHY OPTIONS: Navigation package w/ Garmin GPSMAP 5215 at lower helm and GPSMAP 5212 at upper helm ($13,997)
Garmin GHC 10 autopilot ($5,999)
5-kW Onan genset ($13,300)
28,000-Btu Cruisair A/C system ($7,650)
Kyocera solar panel ($2,000)
Webasto diesel furnace ($5,450)
Side-Power wireless remote for thrusters ($759).

This article originally appeared in the February 2013 issue of Power & Motoryacht magazine.