if(tank instanceof VTOL) {return true;}
    public boolean correctEntity(StringBuffer buff)    {        boolean correct = true;        if (skip())            return true;        if (!correctWeight(buff))        {            buff.insert(0, printTechLevel()+printShortMovement());            buff.append(printWeightCalculation()).append("\n");            correct = false;        }        if (!engine.engineValid)        {            buff.append(engine.problem.toString()).append("\n\n");            correct = false;        }        if (showFailedEquip() && hasFailedEquipment(buff))            correct = false;        if (hasIllegalTechLevels(buff))            correct = false;        return correct;    }