Cruise Calculator

The RMBOA River Murray Cruise Calculator allows users to estimate travelling times, fuel consumption and voyage costs for the lower 1000 km of the River Murray if you know the fuel capacity, average travelling speed and average fuel consumption between points along the river.

The calculator identifies significant refuelling points, locks, Waster Disposal Stations (WDS) and other significant facilities along the river. More information about important river facilities is provided in the RMBOA Voyage Planning Guide provided to members.

The calculator allows the user to enter the refuelling locations and will estimate if the vessel is capable of travelling between refuelling locations based on the distance and the estimated fuel consumption. The Department of Transport, Energy and Infrastructure (DTEI) website provides an interactive map that identifies river boat ramp locations in South Australia.

Fuel Records Spreadsheet

The RMBOA Fuel Records Spreadsheet allows a river user to record their vessel's fuel use, distance travelled and time taken. The spreadsheet then calculates the vessel's average speed and fuel consumption (litres per 100km and litres per hour). The spreadsheet has two example entries that should be deleted before use. The white fields are entered by the user, while the grey fields are calculated by the spreadsheet. The spreadsheet requires either Microsoft Excel or the free Open Office Calc program.

Blackwater Holding Tank Calculator

River vessels with permanently installed toilets are required to have blackwater (sewage) holding tanks. The sewage is held in these tanks until it is pumped out at a Waste Disposal Station (WDS) or by a commercial contractor.

Using simple information such as the dimensions of the holding tank (or its capacity), the average volume of a toilet flush, the average number of flushes per person per day and the number of people on-board, the Black Water holding Tank Calculator provides an estimate of how often the holding tank will need to be pumped out. This calculator can also take into account kitchen sink water that low greywater risk vessels may be required to contain.

Once you have calculated the capacity of your blackwater, you can monitor the level in the tank using the RMBOA Blackwater Pump-Out Record sheet. By recording the duration of a voyage and the number of people on-board, you can estimate when your holding tanks need to be pumped out.

Greywater Holding Tank Calculator

Grey water is any waste water generated on a vessel that is not black water (sewage). This includes water from showers, spas, washing up water, washing machines and dish washers. From 2011, commercial houseboats, permanently occupied houseboats (and cruisers) and vessels deemed to be a high greywater risk will be required to contain and/or treat all greywater.

Using information such as the average amount of water used n washing up, the flow rate of showers, the amount of water used by the washing machine and/or dishwasher, the Greywater Holding Tank Calculator estimates the amount of greywater produced by your vessel.

The calculator also estimates the size of the holding tank required to hold this greywater before it is pumped out at a Waster Disposal Station (WDS) or treated before being returned to the river.