The computer model takes in three different inputs. First, a choice between three boats, one large, one medium, and one small. Second, the dimensions of the iceberg to be towed. Finally, a choice of a blocky or pyramidal shaped iceberg. Using the first input, the model will compute the bollard pull in newtons and speed of the boat. Using the second input, the model will calculate the force needed to tow an iceberg of those dimensions.