I was wondering if anyone knows of a decent product that would help with wood life span that lives in a wet environment. The kicker is I don’t want any coating that can flake off or delamn. I would like some sort of oil I believe or something.
Would linseed oil be a good option ?
The wood is some soft wood
I wipe on tung oil on the teak swim deck on my 95 boat. Not sure if it is the teak or the oil but it still looks brand new.
I’ve had good luck with Thompsons Water Seal on our deck. Reapply every couple of years. Soaks in, so nothing to flake off.
Drenched our planter boxes with thick Tung oil coats, during less than ideal temperature/humidity, poor airflow, impatiently layered multiple coats without waiting for oxidizing polymerization/hardening. Managed to achieve a sticky rancid look that’s helped avoid my better half asking me to make anymore more planter boxes… 
Depending on what folks suggest here, am still planning to use Tung oil for future (food contacting) outdoor projects, but, will try better process than the cluster that created this mess.
Spar varnish.
Thanks everyone I really appreciate the input and knowledge. I will try and source some of this stuff and try it out.
Thanks again everyone I knew I came to the right place haha.
Kind of the wash the wife’s favorite sweater in hot water so you never have to do the laundry thing. 
Epoxy will last 50 years with little to no maintenance. West System is straight forward. It is a two part system that you mix. Make sure wood is dry. Apply three coats or more. Use a trimmed chip brush and discard after each coat. Let a bit of tack set in between coats. You can paint on top or apply clear varnish to preserve wood look (west system 107 does not yellow). Oil on epoxy does seem to work. Spar varnish degrades and peels off in a nasty manner.
Pine tar is a more natural option for soft wood. Make sure wood is still yellow. Direct from Sweden: Genuine Pine Tar | Sage Restoration | Canada USA
But Kirby in New Bedford, MA has some of the best marine paints in US. This is the real deal:
Pine tar is good for a long lasting rough look.
Tung and Teak are great but I would use that more for fine-woodworking purposes. Not great in standing water and needs reapplication.
It’s my understanding that this is true as long as it has UV protection applied. The expoxy may not need maintenance, but the UV coating probably will.
Yes, ideally you apply a protective coat but honestly I don’t think it’s worth sweating in a non-performance situation. West System 207 has a UV inhibitor in it already.
