Seacocks on a boat covered in a film

PBO reader Camilla Ransom has found a "strange film" on one of the boat's seacocks. What should she do? Surveyor Colin Brown has the answer

A raw water pump for a boat

PBO reader Clive Hathway has a leaking raw water pump. Should he buy a replacement or rebuild it? Stu Davies gives his advice

A bottle of Shell GTL fuel

Would gas to liquid (GTL) fuel work better than diesel fuel? PBO's engine whisperer, Stu Davies ponders the question

A white yacht moored by a pontoon

PBO reader Will Kerr has an old dynastart and wants to know if it will be able to charge his batteries. Stu Davies has the answer