David Wilson
Contributor
On to a second snorkel-mask in the Turnbull range. This one is called "Ocean Survey".
M1 Ocean Survey Mask
The catalogue caption read: "M1 Ocean Survey Mask. In green rubber, this is a full-face mask with a large round heavy SAFETY glass lens, and is designed to completely cover the nose and mouth. It features a wide head-strap, twin anodised aluminium snorkel tubes with ball valve assemblies securely held in a head harness. All metal parts are rust-roof, and the mask is designed primarily for swimmers who do not wish to dive, but to observe all underwater activities. "
While the Turnbull "Deluxe with snorkel" mask was designed to cover the eyes and the nose only, the Turnbull Ocean Survey provided full face coverage, including the mouth. Such full face masks often came with twin snorkels, presumably to ensure greater air inflow at the supply end. The only snorkel-mask of this kind still in production anywhere in the world is the 558 made by Eurobalco in Greece:
It's available from the Medex Fishing Megashop in Cyprus at BALCO MASK 558.
M1 Ocean Survey Mask
The catalogue caption read: "M1 Ocean Survey Mask. In green rubber, this is a full-face mask with a large round heavy SAFETY glass lens, and is designed to completely cover the nose and mouth. It features a wide head-strap, twin anodised aluminium snorkel tubes with ball valve assemblies securely held in a head harness. All metal parts are rust-roof, and the mask is designed primarily for swimmers who do not wish to dive, but to observe all underwater activities. "
While the Turnbull "Deluxe with snorkel" mask was designed to cover the eyes and the nose only, the Turnbull Ocean Survey provided full face coverage, including the mouth. Such full face masks often came with twin snorkels, presumably to ensure greater air inflow at the supply end. The only snorkel-mask of this kind still in production anywhere in the world is the 558 made by Eurobalco in Greece:
It's available from the Medex Fishing Megashop in Cyprus at BALCO MASK 558.